Rust in electrical panels, sources of water leaks into electrical panels:
A Study and Report on Frequency and Causes of Rust & Corrosion inside of residential electrical panels.
Field observations of residential service panel connections and components discovered significant occurrences of rust, corrosion, and damage to electrical equipment, risking failure to trip on overcurrent and thus risking building fires.
These observations led to a study of the frequency and cause of water damage, rust, corrosion, or other moisture-related unsafe conditions in residential electrical panels.
This report by Daniel Friedman was presented to the electrical engineering community at the IEEE Holm Conference on Electrical Contacts.
InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.
- Daniel Friedman, Publisher/Editor/Author - See WHO ARE WE?
This page continues with supporting research citations and bibliographical details supporting
CORROSION in ELECTRICAL PANELS - Holm Conference Study, or more-formally, IEEE Holm Conference on Electrical Contacts, Daniel Friedman, Poughkeepsie, NY, October 19, 1992, updated 12 March 2015
[Click to enlarge any image]
Search Arguments and Databases scanned in 1990 looking for reports on rust and corrosion damage to electrical components and service panels:
In ENGI1 database Set Items Description S1 6327 ELECTRIC AND (SERVICE OR PANEL) S2 1206 S1 AND (CORROS? OR RUST? OR BURN? OR BREAK? OR SHORT? OR D-EFECT? OR FIRE? OR BREAK?) S3 54 S2 AND RESID? S4 28 S3 AND RESIDENTIAL S5 917 S2 NOT (ENERGY OR CONSERV? OR UTILIZ? OR COGENER? OR TRANSFORM?) S6 91 S5 AND (CONNECT? OR WIRE) S7 80 S6 NOT (POLLUT? OR SANIT? OR COMMERC?) S8 71 S7 NOT MOTOR? S9 71 S8 NOT CIVIL ENGINEERING S10 71 S9 NOT CIVIL? S11 65 S10 NOT (EARTHQU? OR TRANSMISSION) S12 44 S11 NOT CONDUCT? S13 26 S12 AND CONNECT? S1 6327 ELECTRIC AND (SERVICE OR PANEL) 03036115 E.I. Monthly No: EIM9103-010031 Title: Aging tests of amorphous current transformers used in ground fault interrupters. Author: Nafalski, A.; Matras, G.; Wac-Wlodarczyk, A.; Stryczewska, H. Corporate Source: Lublin Tech Univ, Poland Conference Title: 1990 International Magnetics Conference - INTERMAG Conference Location: Brighton, Engl Conference Date: 1990 Apr 17-20 Sponsor: IEEE Magnetics Soc E.I. Conference No.: 14086 Source: IEEE Transactions on Magnetics v 26 n 5 Sep 1990. p 2005-2007 Publication Year: 1990 CODEN: IEMGAQ ISSN: 0018-9464 Language: English Document Type: JA; (Journal Article) Treatment: A; (Applications); X; (Experimental) Journal Announcement: 9103 Abstract: It is pointed out that the magnetic material for cores of a differential current transformer (DCT) of a ground fault interrupter (GFI) should be characterized by high initial permeability, little dependence on temperature, and a low remanence. These parameters have been taken into consideration during selection of the most suitable annealing regime of Co-based (CoFeMnMo)//7//7(SiB)//2//3 material. It is assumed that a GFI is required to have a service life of 20-years continuous operation. Hence, the magnetic properties of the core of the DCT must be highly stable and exhibit virtually no deterioration over this period. During its operational lifetime, the core may be subjected to rapid saturation due to short circuits and earth faults, etc., as well as cyclic temperature changes. The effects of temperature aging and high current transients on the performance of the DCT were investigated. It is concluded that current shocks do not significantly alter the small-signal magnetic permeability of Co-based amorphous cores of selected annealing. The material examined exhibits degradation of magnetic properties due to aging greater than that reported for Fe-based materials. The relatively rapid aging is probably connected with the selected quick quenching in water following annealing. 9 Refs. Descriptors: *ELECTRIC INSTRUMENT TRANSFORMERS--*Aging; MAGNETIC MATERIALS--Amorphous; ELECTRIC CIRCUIT BREAKERS; MAGNETIC CORES Identifiers: GROUND FAULT INTERRUPTERS; AMORPHOUS CURRENT TRANSFORMERS Classification Codes: 714 (Electronic Components); 421 (Materials Properties); 708 (Electric & Magnetic Materials); 701 (Electricity & Magnetism); 704 (Electric Components & Equipment) 71 (ELECTRONICS & COMMUNICATIONS); 42 (MATERIALS PROPERTIES & TESTING); 70 (ELECTRICAL ENGINEERING) 02192698 E.I. Monthly No: EI8704034809 Title: METHODS FOR MITIGATING CORROSION OF COPPER CONCENTRIC NEUTRAL WIRES IN CONDUIT. Author: Anon Source: Electr Power Res Inst Rep EPRI EL 4981 Jan 1987 116P Publication Year: 1987 CODEN: EPELD3 Language: ENGLISH Document Type: RR; (Report Review) Treatment: X; (Experimental) Journal Announcement: 8704 Abstract: A method perfected in this study makes it possible to locate and assess corrosion in underground distribution cables in conduit. In addition, the study identified two techniques utilities can use to protect such cables from corrosion, which has been an increasing problem in many residential service areas. (Edited author abstract) Descriptors: *ELECTRIC POWER DISTRIBUTION--*Underground Installation; ELECTRIC CABLES--Corrosion Protection; ELECTRIC CONDUITS; ELECTRIC MEASUREMENTS--Resistance Identifiers: CORROSION EXTENT MEASUREMENT; UNDERGROUND RESIDENTIAL DISTRIBUTION Classification Codes: 706 (Electric Transmission & Distribution); 539 (Metals Corrosion & Protection); 942 (Electrical & Electronic Measuring Instruments) 70 (ELECTRICAL ENGINEERING); 53 (METALLURGICAL ENGINEERING); 94 (INSTRUMENTS & MEASUREMENT) 02102866 E.I. Monthly No: EIM8607-045187 Title: ECONOMICS OF DIRECT CONTROL OF RESIDENTIAL LOADS ON THE DESIGN AND OPERATION OF THE DISTRIBUTION SYSTEM: PART III. THE ECONOMICS OF LOAD MANAGEMENT. Author: Davis, Murray W.; Krupa, Theodore J.; Diedzic, Matthew J. Corporate Source: Detroit Edison Co, Detroit, MI, USA Conference Title: IEEE Power Engineering Society 1982 Summer Meeting. Conference Location: San Francisco, CA, USA Conference Date: 1982 Jul 18-23 Sponsor: IEEE Power Engineering Soc, New York, NY, USA E.I. Conference No.: 01344 Source: Publ by IEEE, New York, NY, USA Pap 82 SM 441-4, 8p Publication Year: 1982 Language: English Document Type: PA; (Conference Paper) Journal Announcement: 8607 Abstract: This paper is the third in a series of three papers which address the economics and effects of controlling central air conditioners, electric water heaters, and service voltage on the design and operation of the distribution system. The load characteristics measured throughout a single distribution circuit over a five year period were used as a basis for evaluating the benefits and costs of direct load control on the distribution system. Models were developed to evaluate the impact of various load control strategies on distribution system losses and on changes in the thermal capacity of transformers and cables. A cost summary is presented along with a break-even analysis which incorporates T&D system benefits in an overall economic evaluation of load control. (Author abstract) 4 refs. Descriptors: *ELECTRIC POWER DISTRIBUTION--*Economics; ELECTRIC POWER SYSTEMS--Load Management; buildings--Air Conditioning Identifiers: DIRECT CONTROL; RESIDENTIAL LOADS; SINGLE DISTRIBUTION CIRCUIT; THERMAL CAPACITY; LOAD CONTROL STRATEGIES; CENTRAL AIR CONDITIONERS Classification Codes: 706 (Electric Transmission & Distribution); 911 (Industrial Economics); 402 (buildings & Towers); 643 (Space Heating & Air Conditioning) 70 (ELECTRICAL ENGINEERING); 91 (ENGINEERING MANAGEMENT); 40 (CIVIL ENGINEERING); 64 (HEAT & THERMODYNAMICS) 02820962 E.I. Monthly No: EIM8911-040960 Title: Assessment of conductors. Author: Zollars, William B. Corporate Source: Alcoa Conductor Products Co, Pittsburgh, PA, USA Conference Title: Proceedings of the Sessions Related to Steel Structures at Structures Congress '89 Conference Location: San Francisco, CA, USA Conference Date: 1989 May 1-5 Sponsor: ASME, New York, NY, USA E.I. Conference No.: 12363 Source: Proc Sess Relat Steel Struct Congr. Publ by ASCE, New York, NY, USA. p 74-82 Publication Year: 1989 ISBN: 0-87262-697-0 Language: English Document Type: PA; (Conference Paper) Treatment: X; (Experimental) Journal Announcement: 8911 Abstract: This paper deals with the mechanical integrity of conductors after several years in service and discusses current innovative conductor designs which benefit the structural designer working to re conductor lines. Conductor properties may be altered due to fatigue from aeolian vibration, operation at elevated temperatures, and atmospheric corrosion. Loss of strength and additional sag due to elevated temperature operation are also discussed. (Edited author abstract) 2 Refs. Descriptors: *ELECTRIC CONDUCTORS, WIRE--*Testing; ELECTRIC LINES--Towers Identifiers: TRAPEZOIDAL STRANDS; ALUMINUM CONDUCTORS Classification Codes: 704 (Electric Components & Equipment); 421 (Materials Properties); 422 (Materials Testing) 70 (ELECTRICAL ENGINEERING); 42 (MATERIALS PROPERTIES & TESTING) 02317438 E.I. Monthly No: EI8710103817 Title: PREVENTING SERVICE CONNECTION CORROSION. Author: St-Onge, Hank Corporate Source: Duratron Systems Ltd Source: Water and Pollution Control (Don Mills, Canada) v 124 n 5 Jun 1986 p 16-17 Publication Year: 1986 CODEN: WPCOAR ISSN: 0043-1117 Language: ENGLISH Document Type: JA; (Journal Article) Treatment: A; (Applications) Journal Announcement: 8710 Abstract: Service connections and buried electrical systems joined to non-metallic mains require special corrosion control measures. This article discusses copper services and corrective measures that may be taken to protect them. Also discussed are buried electrical systems, corrective measures, sacrificial anode applications, and anode requirements. Descriptors: *PIPELINES--*Corrosion Protection; ELECTRIC LINES--Corrosion Protection; CORROSION PROTECTION, ANODIC Identifiers: SERVICE CONNECTION Classification Codes: 619 (Pipes, Tanks & Accessories); 539 (Metals Corrosion & Protection); 706 (Electric Transmission & Distribution) 61 (PLANT & POWER ENGINEERING); 53 (METALLURGICAL ENGINEERING); 70 (ELECTRICAL ENGINEERING) 02278688 E.I. Monthly No: EIM8710-067724 Title: C724 - A NEW HIGH STRENGTH COPPER ALLOY FOR ELECTRONIC/ELECTRICAL CONNECTORS. Author: Breedis, J. F.; Hauser, R. J. Corporate Source: Olin Corp, New Haven, CT, USA Conference Title: Eighteenth Annual Connectors and Interconnection Technology Symposium Proceedings. Conference Location: Philadelphia, PA, USA Conference Date: 1985 Nov 18-20 Sponsor: Electronic Connector Study Group Inc, Fort Washington, PA, USA E.I. Conference No.: 09575 Source: Annual Connectors and Interconnection Technology Symposium Proceedings 18th. Publ by Electronic Connector Study Group Inc, Fort Washington, PA, USA p 123-130 Publication Year: 1985 CODEN: ACIPE3 Language: English Document Type: PA; (Conference Paper) Journal Announcement: 8710 Abstract: A new high strength, precipitation hardened copper alloy has been developed for the electronic/electrical connector market in response to the need for high reliability and stability in service, while minimizing material cost. The alloy, designated as C724, has a Cu-Ni-Al base composition with supplemental additions of Mg and Mn. Physical and mechanical properties of this alloy that are important to designers of electronic/electrical connectors are summarized, as well as compared with other copper alloys used in this application. C724 is available in two mill hardened tempers encompassing yield strengths of between 100 to 140 KSI with isotropic longitudinal and transverse minimum bend radius limits of 1. 5-3t. The alloy is resistant to stress relaxation with at least 90% of the initially imposed stress expected to remain after 10 years at 221 DEGREE F (105 DEGREE C). The alloy also has excellent stress corrosion resistance, comparable to mill hardened beryllium copper alloys. (Edited author abstract) 4 refs. Descriptors: *ELECTRIC CONNECTORS--*Materials; COPPER AND ALLOYS-- Applications Identifiers: HIGH STRENGTH COPPER ALLOY; ELECTRONIC/ELECTRICAL CONNECTORS ; CONNECTOR MATERIALS DESIGN; STRESS RELAXATION; STRENGTH RELAXATION; ISOTROPIC BEND PROPERTIES Classification Codes: 704 (Electric Components & Equipment); 544 (Copper & Alloys); 714 (Electronic Components) 70 (ELECTRICAL ENGINEERING); 54 (METAL GROUPS); 71 (ELECTRONICS & COMMUNICATIONS) 01890891 E.I. Monthly No: EIM8509-052110 Title: INFRARED INSPECTION OF UNDERGROUND SECONDARY CONNECTIONS. Author: Gitto, Joseph F.; Perl, Martin Corporate Source: Consolidated Edison Co of New York Inc, New York, NY, USA Conference Title: Proceedings of the 9th Annual Engineering Conference on Reliability for the Electric Power Industry. Conference Location: Hershey, PA, USA Conference Date: 1982 Jun 16-18 Sponsor: IEEE Reliability Soc, New York, NY, USA; AIIE, Lehigh Valley Chapter, USA; EPRI, Palo Alto, CA, USA; ASQC, Milwaukee, WI, USA; ANS, Delaware Valley Section, USA; et al E.I. Conference No.: 05668 Source: Publ by ASQC, Milwaukee, WI, USA p 294-296 Publication Year: 1982 Language: English Document Type: PA; (Conference Paper) Journal Announcement: 8509 Abstract: The application of infrared (IR) scanning by utilities for aerial surveys of residences, inspection of substation equipment and overhead connections is well known. This paper describes a new application for IR scanning - inspection of underground secondary connections in manholes and secondary service boxes. Infrared scanning of underground secondary connections, at Con Edison, has been found to be a viable method for preventive maintenance. Detection of potential failures permits an orderly and timely repair of the defective condition before the existence of an emergency (customer outage) condition. Descriptors: *THERMOGRAPHY--*Applications; ELECTRIC CONNECTORS-- Nondestructive Examination; FAILURE ANALYSIS Identifiers: INFRARED INSPECTION; SCANNING; UNDERGROUND SECONDARY CONNECTIONS Classification Codes: 944 (Moisture, Pressure & Temperature, & Radiation Measuring Instruments); 704 (Electric Components & Equipment); 714 (Electronic Components); 421 (Materials Properties); 422 (Materials Testing) 94 (INSTRUMENTS & MEASUREMENT); 70 (ELECTRICAL ENGINEERING); 71 (ELECTRONICS & COMMUNICATIONS); 42 (MATERIALS PROPERTIES & TESTING) 30mar91 15:21:50 User042798 Session B20.4 $9.67 0.406 Hrs FileKI $9.67 Estimated total session cost 0.406 Hrs. Logoff: level 25.02.16 B 15:21:50 (second access, same date) In ENGI1 database Set Items Description S1 0 RESIDENTIAL SERVICE PANEL S2 1401 ELECTRIC? AND (RESIDENTIAL) S3 23 S2 AND PANEL? S4 22 S3 NOT PANEL MEASUREM? S5 21 S4 NOT COGENER? S6 19 S5 NOT LOAD MANAGEMENT S7 16 S6 NOT POWER GENERATION S8 16 S7 NOT CONSERVAT? S9 16 S8 NOT VIDON S10 15 S9 NOT UNDERGROUND S11 11 S10 NOT PHOTOVOLTAIC S12 11 S11 NOT OPTICAL 11/L/7 01476082 E.I. Monthly No: EI8401002616 E.I. Yearly No: EI84040628 Title: PERFORMANCE OF RESIDENTIAL ELECTRICAL WIRING SYSTEM COMPONENT PARTS. Author: Anon Corporate Source: B. C. Research, Vancouver, BC, Can Source: Res Rep Can Electr Assoc n 000 U 114 Mar 1982 112p Publication Year: 1982 CODEN: RCEADM Language: ENGLISH Journal Announcement: 8401 Abstract: The general performance of many residential electrical wiring system components is examined, and some components, like receptacles, extension cords, incandescent light fixtures, fluorescent light ballasts, panelboards, and nylon-sheathed wire, are found unacceptable because of poor quality control, poor design, unpredicted current 'normal' use conditions, lack of compatible accessories, poor installation workmanship, manufacturing economics, and other factors. A case is made for the imposition of improved performance standards for some residential electrical wiring components on the grounds of reducing annoyance, apprehension, and the incidence of serious consequences of component failures. Better means for inspection authorities are suggested to gather and collate information on performance for prompt forwarding to the standards committees empowered to enact and improve performance standards. Refs. Descriptors: *ELECTRIC WIRING, buildings--*Components; ELECTRIC WIRING-- Performance Identifiers: RESIDENTIAL WIRING COMPONENTS PERFORMANCE Classification Codes: 402 (buildings & Towers); 706 (Electric Transmission & Distribution) 40 (CIVIL ENGINEERING); 70 (ELECTRICAL ENGINEERING) ?f residential service entrance and (electric? or panel) 5622 RESIDENTIAL 47149 SERVICE 3715 ENTRANCE 4 RESIDENTIAL SERVICE ENTRANCE 315005 ELECTRIC? 9233 PANEL S14 4 RESIDENTIAL SERVICE ENTRANCE AND (ELECTRIC? OR PANEL) 14/L/1 02530600 E.I. Monthly No: EI8803023150 Title: DEVELOPMENT OF DESIGN GUIDELINES AND PRACTICES FOR IMPROVING RESIDENTIAL SERVICE ENTRANCES. Author: Keyes, C. Corporate Source: Ontario Research Foundation, Toronto, Ont, Can Source: Res Rep Can Electr Assoc 228 U 359 May 1987 var pagings Publication Year: 1987 CODEN: RCEADM ISSN: 0823-2660 Language: ENGLISH Document Type: RR; (Report Review) Treatment: T; (Theoretical); X; (Experimental) Journal Announcement: 8803 Abstract: Residential service entrance fusible panelboards are a major identifiable cause of electric fires. Although some remedial measures have been taken, a continuing change to more cyclic loading on panelboards in the form of electric heating may cause a resurgence of failures in the future. The primary objectives of this three-part report were to investigate the problems associated with new and existing service entrance equipment and to establish design guidelines and practices for improved reliability particularly where loads such as electric heat are involved. Parts I and II explore in detail the reliability issues surrounding existing and new service equipment respectively. Based on the conclusions and recommendations of these two parts, the guidelines for improving service entrance equipment reliability, found in Part III, are developed. 38 refs. Descriptors: *ELECTRIC SWITCHBOARDS--*Reliability; ELECTRIC LOADS; ELECTRIC CIRCUIT BREAKERS; ELECTRIC SWITCHES--Testing; STANDARDS; ELECTRIC CONTACTS--Failure Identifiers: RESIDENTIAL SERVICE ENTRANCE RELIABILITY TESTING; INSULATION TESTS; ELECTRICAL TESTS; WEIBULL STATISTICS; ARRHEMIUS MODEL Classification Codes: 704 (Electric Components & Equipment); 706 (Electric Transmission & Distribution); 922 (Statistical Methods); 902 (Engineering Graphics & Standards) 70 (ELECTRICAL ENGINEERING); 92 (ENGINEERING MATHEMATICS); 90 (GENERAL ENGINEERING) 14/L/2 02294586 E.I. Monthly No: EI8708079092 Title: RESIDENTIAL SERVICE ENTRANCE CURRENT UNBALANCE. Author: Anon Corporate Source: Ontario Hydro, Toronto, Ont, Can Source: Res Rep Can Electr Assoc 234 U 384 Apr 1985 80p Publication Year: 1985 CODEN: RCEADM ISSN: 0823-2660 Language: ENGLISH Document Type: RR; (Report Review) Treatment: A; (Applications); X; (Experimental) Journal Announcement: 8708 Abstract: The residential service entrance current unbalance study is a preliminary survey of line-to-line current unbalances at the service entrance of typical homes during the heating season. This information is of interest to heating equipment and control manufacturers and the electrical utilities involved in the off-oil program. The results provide an indication of the improvements possible from electrical load redistribution and whether the electrical distribution panelboard and plenum heaters are being utilized to the full potential. 2 refs. Descriptors: *ELECTRIC POWER SYSTEMS--*Load Distribution; HEATING-- Electric; ELECTRIC POWER DISTRIBUTION; ELECTRIC APPLIANCES Identifiers: LOAD DISTRIBUTING CONTROLLER; SPACE HEATING SYSTEMS; CURRENT UNBALANCES; HOMEOWNERS' ELECTRICAL SYSTEM Classification Codes: 706 (Electric Transmission & Distribution); 643 (Space Heating & Air Conditioning); 704 (Electric Components & Equipment) 70 (ELECTRICAL ENGINEERING); 64 (HEAT & THERMODYNAMICS) ?f circuit breaker? 83508 CIRCUIT 4587 BREAKER? S15 3517 CIRCUIT BREAKER? ?f s15 and residential 3517 S15 5622 RESIDENTIAL S16 10 S15 AND RESIDENTIAL ?type s16/l/all 00404433 E.I. Monthly No: EI7410060568 Title: Circuit Breakers or Safety Fuses in Residential buildings. Considerations Associated with the Design of Electric Installations. Title: LEITUNGSSCHUTZSCHALTER ODER SICHERUNGEN IM WOHNUNGSBAU. UEBERLEGUNGEN BEI DER PLANUNG ELEKTRISCHER INSTALLATIONEN. Author: Popper, Wilhelm Corporate Source: Bernische Kraftwerke, Bern, Switz Source: Bulletin de l'Association Suisse des Electriciens v 65 n 13 Jun 29 1974 p 957-963 Publication Year: 1974 CODEN: BUSEAH ISSN: 0004-587X Language: GERMAN Journal Announcement: 7410 Abstract: Criteria for the selection between circuit breakers and fuses are indicated. The importance of maximum short-circuit current is pointed out and a simple method for its determination is presented, along with two practical examples. The effect of local conditions on the decision between circuit breakers and fuses is discussed. Problems associated with series connection of circuit breakers are considered. 2 refs. In German. Descriptors: *buildings--*Electric Equipment; ELECTRIC CIRCUIT BREAKERS; ELECTRIC FUSES Classification Codes: 402 (buildings & Towers); 704 (Electric Components & Equipment); 914 (Safety Engineering) 40 (CIVIL ENGINEERING); 70 (ELECTRICAL ENGINEERING); 91 (ENGINEERING MANAGEMENT) 21/L/1 02523070 E.I. Monthly No: EIM8801-003024 Title: EFFECT OF HARD WATER SCALE BUILDUP AND WATER TREATMENT ON RESIDENTIAL WATER HEATER PERFORMANCE. Author: Talbert, S. G.; Stickford, G. H.; Newman, D. C.; Stiegelmeyer, W. N. Corporate Source: Battelle, Columbus Div, Columbus, OH, USA Conference Title: ASHRAE Transactions 1986. (Technical Paper Presented at the 1986 Annual Meeting.) Conference Location: Portland, OR, USA Conference Date: 1986 Jun 22-25 Sponsor: ASHRAE, Atlanta, GA, USA E.I. Conference No.: 10599 Source: ASHRAE Transactions 1986 v 92 pt 2B. Publ by ASHRAE, Atlanta, GA, USA p 433-447 Publication Year: 1986 CODEN: ASHTAG ISSN: 0001-2505 Language: English Document Type: PA; (Conference Paper) Journal Announcement: 8801 Abstract: Conventional gas and electric storage-type residential water heaters were operated at four different U. S. cities under accelerated test conditions to measure the effect of scale buildup on efficiency and to assess the benefits and limitations of common water treatment methods. The four selected test sites had hard water supplies with expected scale-forming tendencies and were located in Columbus, OH; Lisle, IL; Roswell, NM; and Marshall, MN. The main conclusions are as follows. After 60 lbs (27 kg) of scale buildup at two of the test sites (representing an estimated 20 years of equivalent scale buildup), the efficiency of the gas water heaters gradually declined about 5%, while that of the electric water heaters remained constant. However, the buildup of scale in the electric heaters caused the electric heating element to fail periodically, and in the gas-fired heaters, it caused the tank metal temperatures near the burner to operate hotter. (Edited author abstract) 3 refs. Descriptors: *WATER TREATMENT; WATER HEATERS--Performance Identifiers: WATER TREATMENT METHODS; SCALE DEPOSITS; ANODE-CORROSION PROBLEMS; EFFICIENCY TEST RESULTS; CORROSION TESTS; SCALE BUILDUP COMPARISON STUDIES Classification Codes: 433 (Railroad Transportation); 643 (Space Heating & Air Conditioning); 913 (Production Planning & Control) 43 (TRANSPORTATION); 64 (HEAT & THERMODYNAMICS); 91 (ENGINEERING MANAGEMENT) 00101338 E.I. Monthly No: EI70X149050 Title: Comparison of concrete encased grounding electrodes to driven ground rods. Author: WIENER, P. Corporate Source: Dept of Water and Power, Los Angeles, Calif Source: IEEE Trans Ind Gen Appl v IGA-6 n 3 May-June 1970 p 282-7 Publication Year: 1970 Language: ENGLISH Journal Announcement: 70X1 Abstract: An experimental study was made to compare the efficacy of concrete encased grounding electrodes to that of driven ground rods for grounding residential and small commercial electric services. The resistance of the concrete encased electrodes was generally lower than that of the driven ground rods and the concrete encased electrodes were more effective in carrying current from the 120/ 240 v systems. Descriptors: *ELECTRIC EQUIPMENT--*Grounding; ELECTRODES--Corrosion; ELECTRIC LINES--Grounding Classification Codes: 704 (Electric Components & Equipment); 706 (Electric Transmission & Distribution) Set Items Description S1 0 RESIDENTIAL SERVICE PANEL S2 1401 ELECTRIC? AND (RESIDENTIAL) S3 23 S2 AND PANEL? S4 22 S3 NOT PANEL MEASUREM? S5 21 S4 NOT COGENER? S6 19 S5 NOT LOAD MANAGEMENT S7 16 S6 NOT POWER GENERATION S8 16 S7 NOT CONSERVAT? S9 16 S8 NOT VIDON S10 15 S9 NOT UNDERGROUND S11 11 S10 NOT PHOTOVOLTAIC S12 11 S11 NOT OPTICAL S13 1 RESIDENTIAL WIRING COMPONENTS S14 4 RESIDENTIAL SERVICE ENTRANCE AND (ELECTRIC? OR PANEL) S15 3517 CIRCUIT BREAKER? S16 10 S15 AND RESIDENTIAL S17 0 S2 AND NEUTRAL BUS S18 43 S2 AND RUST? OR S2 AND CORROSION S19 43 S18 AND RESIDENTIAL S20 41 S19 NOT SILICON S21 8 S20 NOT UNDERGROUND S22 17 S2 AND FIRE 22/L/1 02965808 E.I. Monthly No: EI9010117824 Title: What causes wiring fires in residences?. Author: Smith, Linda E.; McCoskrie, Dennis Source: Fire Journal (Boston) v 84 n 1 Jan-Feb 1990 7p Publication Year: 1990 CODEN: FIJOAU ISSN: 0015-2617 Language: English Document Type: JA; (Journal Article) Treatment: G; (General Review); X; (Experimental) Journal Announcement: 9010 Abstract: The US Consumer Product Safety Commission (CPSC) first sponsored a project to identify the causes of residential fires involving the electrical distribution system in 1980. To augment this effort, CPSC sponsored a second phase of data collection in additional cities in 1984 and 1985. This second phase used the same data collection criteria and questionnaire as the first phase, but a different contractor delivered the training. Overall, 16 fire departments participated in the study and contributed 149 fire investigations that met the criteria for the project. This article presents the results of these combined efforts. Descriptors: *HOUSES--*Building Wiring; ELECTRIC WIRING, buildings--Fires Identifiers: US CONSUMER PRODUCT SAFETY COMMISSION Classification Codes: 402 (buildings & Towers); 706 (Electric Transmission & Distribution); 914 (Safety Engineering) 40 (CIVIL ENGINEERING); 70 (ELECTRICAL ENGINEERING); 91 (ENGINEERING MANAGEMENT) 22/L/7 02275376 E.I. Monthly No: EIM8709-063447 Title: FIRE RELATED HAZARDS OF CABLES: THE CANADIAN POSITION: DEVELOPMENT OF FIRE RESISTANT INSIDE WIRING CABLE. Author: Hartley, M. D.; Jaques, R. E. Corporate Source: Canada Wire & Cable Ltd., Toronto, Ont, Can Conference Title: Proceedings of 35th International Wire and Cable Symposium. Conference Location: Reno, NV, USA Conference Date: 1986 Nov 18-20 Sponsor: US Army Communications-Electronics Command, Fort Monmouth, NJ, USA E.I. Conference No.: 10049 Source: Proceedings of International Wire and Cable Symposium 35th. Publ by US Army Communications-Electronics Command, Fort Monmouth, NJ, USA p 554-559 Publication Year: 1986 CODEN: PIWSDG ISSN: 0091-7702 Language: English Document Type: PA; (Conference Paper) Journal Announcement: 8709 Abstract: The Canadian Electrical Code and the National Building Code in Canada recognize only two designations in regards to fire resistance of cables; cables for use in combustible (residential) buildings and cables for use in non-combustible buildings. The Test standard for cables for non-combustible buildings resembles IEEE-383. However, it is more severe; particularly for small nonarmoured cables such as Inside Wiring Cable. This forthcoming requirement has necessitated material and product development. Although an Inside Wiring Cable modification of both insulation and jacket was undertaken, the large volume fraction of combustible material in the jacket vis a vis the insulation made it the area of greatest impact. The paper outlines the development and its effect on cable performance. (Author abstract) 12 refs. Descriptors: *TELECOMMUNICATION CABLES--*Fire Protection; FIRE PROTECTION --Safety Codes Identifiers: FIRE HAZARDS; CSA STANDARD C22. 2; FIRE TESTS Classification Codes: 716 (Radar, Radio & TV Electronic Equipment); 718 (Telephone & Line Communications); 914 (Safety Engineering) 71 (ELECTRONICS & COMMUNICATIONS); 91 (ENGINEERING MANAGEMENT) 22/L/9 01939666 E.I. Monthly No: EI8601002264 E.I. Yearly No: EI86036463 Title: ARCING FAULTS IN METALLIC CONDUIT AT 120 AND 240 V. Author: FULLER, JACKSON F.; HANNA, WILLIAM J.; KALLENBACH, GENE A. Corporate Source: UNIV OF COLORADO, DEP OF ELECTRICAL & COMPUTER ENGINEERING, BOULDER, CO, USA Source: IEEE TRANS IND APPL V IA-21 N 3 1985 P 820-825 Publication Year: 1985 CODEN: ITIACR ISSN: 0093-9994 Language: ENGLISH Document Type: JA; (JOURNAL ARTICLE) Treatment: T; (THEORETICAL) Journal Announcement: 8601 Abstract: OVER THE YEARS, MANY FIRES HAVE BEEN BLAMED ON THE FAILURE OF ELECTRICAL EQUIPMENT OR WIRING IN RESIDENTIAL OR COMMERCIAL INSTALLATIONS. TO HELP RESOLVE THE QUESTION OF WHETHER OR NOT THESE ACCUSATIONS HAVE SUBSTANCE, MANY TESTS HAVE BEEN PERFORMED TO EVALUATE VARIOUS TYPES OF WIRE AND INSULATION IN DIFFERENT ENVIRONMENTS ON 120-V AND 240-V AC CIRCUITS. EVIDENCE FROM A RECENT FIRE IN A LOCAL COMMERCIAL INSTALLATION AT 208/120 V INDICATED THAT PAPER PRODUCTS LYING ON THE EXTERIOR OF A CONDUIT WERE IGNITED BY AN INTERNAL ARC BETWEEN A CONDUCTOR AND THE METALLIC CONDUIT WALL. THE FAULT CURRENT DID NOT TRIP A STANDARD 100-A PLASTIC CASE PANEL BREAKER. LABORATORY TESTS WERE PERFORMED IN AN ATTEMPT TO DUPLICATE THE CONDITIONS AND CONFIRM THE CONCLUSIONS. THE RESULTS ARE REPORTED. 17 REFS. Descriptors: *ELECTRIC FAULT CURRENTS; ELECTRIC WIRING--FIRE PROTECTION; ELECTRIC ARCS; ELECTRIC CONDUITS Identifiers: AC ARCS; ARCING FAULTS Classification Codes: 706 (Electric Transmission & Distribution); 701 (Electricity & Magnetism); 402 (buildings & Towers); 914 (Safety Engineering) 70 (ELECTRICAL ENGINEERING); 40 (CIVIL ENGINEERING); 91 (ENGINEERING MANAGEMENT) 22/L/10 01868164 E.I. Monthly No: EIM8505-024805 Title: ARCING FAULTS IN METALLIC CONDUIT AT 120 AND 240 VOLTS. Author: Fuller, Jackson F.; Hanna, William J.; Kallenbach, Gene A. Corporate Source: Univ of Colorado at Boulder, Dep of Electrical & Computer Engineering, Boulder, CO, USA Conference Title: Conference Record - Industrial & Commercial Power System Technical Conference 1984. ( Papers presented at the 1984 Annual Meeting - IEEE Industry Applications Society.) Conference Location: Atlanta, GA, USA Conference Date: 1984 May 7-10 Sponsor: IEEE Industry Applications Soc, Static Power Converter Committee, New York, NY, USA; IEEE, Atlanta Section, Atlanta, GA, USA E.I. Conference No.: 04511 Source: IEEE Conference Record of Industrial and Commercial Power Systems Technical Conference 1984. Publ by IEEE, New York, NY, USA. Available from IEEE Service Cent (Cat n 84CH2040-4), Piscataway, NJ, USA p 108-111 Publication Year: 1984 CODEN: CRICDM Language: English Document Type: PA; (Conference Paper) Journal Announcement: 8505 Abstract: Over the years many questions have been raised about the number of fires that have actually been caused by the failure of electric equipment or wiring in residential or commercial installations. To help resolve these questions, many tests have been performed to evaluate various types of wire and insulation in different environments on 120 and 240 volt ac circuits. Evidence from a recent fire indicated that combustible material lying on the exterior of a conduit was ignited due to an internal arc between a conductor and the metallic conduit wall. Laboratory tests were performed in an attempt to duplicate the conditions and confirm the conclusions. This paper is a report of the results. 17 refs. Descriptors: *ELECTRIC ARCS; ELECTRIC WIRING, buildings; ELECTRIC FAULT CURRENTS; ELECTRIC CONDUITS; buildings--Fire Protection Identifiers: ARCING FAULTS; BUILDING FIRES; ARC PHYSICS Classification Codes: 701 (Electricity & Magnetism); 706 (Electric Transmission & Distribution); 402 (buildings & Towers); 931 (Applied Physics) 70 (ELECTRICAL ENGINEERING); 40 (CIVIL ENGINEERING); 93 (ENGINEERING PHYSICS) 22/L/11 01599826 E.I. Monthly No: EI8412130645 E.I. Yearly No: EI84040368 Title: REDUCTION OF FIRES CAUSED BY RESIDENTIAL SERVICE ENTRANCE PANEL BOARDS. Author: Hicks, R. L.; Liberatore, P.; Bartlett, D.; Major, R. Corporate Source: Ontario Hydro, Toronto, Ont, Can Source: Res Rep Can Electr Assoc n 83-33 Dec 1983 27p Publication Year: 1983 CODEN: RCEADM Language: ENGLISH Journal Announcement: 8412 Abstract: The performance of residential electrical service entrance panelboards is reviewed. Field data identifying them as an identified cause of electrical fires are presented. Remedial measures already taken and additional steps which might further reduce the possibility of fires from panelboards are identified. Recommendations are made to carry out evaluative tests in support of remedial measures and to prepare guidelines on the design of future service entrances. 31 refs. Descriptors: *ELECTRIC SWITCHBOARDS--*Fire Protection; ELECTRIC WIRING, buildings--Fire Protection; HOUSES--Electric Equipment; buildings--Electric Equipment; APARTMENT HOUSES--Electric Equipment Identifiers: ELECTRICAL SERVICE ENTRANCE; PANEL BOARDS Classification Codes: 704 (Electric Components & Equipment); 706 (Electric Transmission & Distribution); 402 (buildings & Towers) 70 (ELECTRICAL ENGINEERING); 40 (CIVIL ENGINEERING) 22/L/16 00774475 E.I. Monthly No: EI7803016949 Title: EXPLORATORY STUDY OF GLOWING ELECTRICAL CONNECTIONS. Author: Meese, William J.; Beausoliel, Robert W. Corporate Source: NBS, Washington, DC Source: National Bureau of Standards, Building Science Series n 103 Oct 1977 22 p Publication Year: 1977 CODEN: BSSNBV ISSN: 0083-1794 Language: ENGLISH Journal Announcement: 7803 Abstract: This report describes and characterizes with quantifiable electrical and thermal measures the extent to which loose electric connections in residential-type branch circuits have overheated in the laboratory. With loose electric connections, which conceivably could be inadvertantly duplicated in field installations, but with otherwise normal installation and operating conditions, visible glows have been observed under laboratory test conditions in nominal 120 v, 15 and 20 amp branch circuits with both copper and aluminum wire. Characteristics of the glow condition are differentiated from arching/sparking as sometimes observed in making or breaking electric circuits. 8 refs. Descriptors: *ELECTRIC CONNECTORS; ELECTRIC SPARKS; ELECTRIC ACCIDENTS-- Prevention; FIRE PROTECTION Identifiers: ELECTRIC CONNECTIONS; GLOWING ELECTRIC CONNECTIONS; FIRE HAZARDS Classification Codes: 701 (Electricity & Magnetism); 704 (Electric Components & Equipment); 714 (Electronic Components); 914 (Safety Engineering) 70 (ELECTRICAL ENGINEERING); 71 (ELECTRONICS & COMMUNICATIONS); 91 (ENGINEERING MANAGEMENT)
HOLM93A 0 600 600 15.2 16.5 13.8 13 18 .5 600 600 18.1 20.9 15.3 14 28 .9 600 600 20.4 27.6 13.2 13 48 9.3 600 600 56.9 79.2 34.6 21.9 115.9 X Y1 Y2 Y3 Y4 Y5 Y6 Y7 NOTE: Y1 AND Y2 HAVE BEEN INSERTED IN ORDER TO GET A DOTTED LINE FOR THE FINAL GRAPH. SPLOT DOES NOT SEEM TO HAVE ANY OTHER WAY TO DO THIS. THE PLOTS OF Y1 AND Y2 WITH SOLID AND DASHED LINES WILL NOT PRINT IF ABOVE THE UPPER Y-AXIS LIMIT. DO THIS. THE PLOTS OF Y1 HOLM93B.DAT 2 8.2 9.2 7.2 5.9 9.5 4 39.6 58.5 20.5 18.1 88.3 6 45.5 74.2 16.8 20.6 187.7 X Y1 Y2 Y3 Y4 Y5 Y6 Y7 .2 7.2 5.9 9.5 4 39.6 58.5 20.5 18.1 88.3 6 45.5 74.2 16.8 20.6 187.7 X Y1 Y2 Y3 Y4 Y5 HOLM93C 1 600 5 600 7 600 -0.12 57.4 2.88 87.3 10.3 151.1 -0.12 62.9 2.88 102.6 10.3 221.6 -0.12 51.8 2.88 71.9 10.3 80.6 -0.12 47.7 2.88 60.9 10.3 106.3 -0.12 87.1 2.88 121.7 10.3 218 0.12 111 3.12 179.3 10.5 348.7 0.12 133.7 3.12 231.2 10.5 411.7 0.12 88.3 3.12 127.4 10.5 285.5 0.12 69.5 3.12 90.3 10.5 258 0.12 146.8 3.12 286 10.5 434 133.7 3.12 231.2 10.5 411.7
...
Continue reading at CORROSION & MOISTURE SOURCES in PANELS or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX.
Or see these
ELECTRICAL PANEL RUST & CORROSION RESEARCH / BIBLIOGRAPHY - Holm Conference Study Research, at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.
Or see this
Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia
Questions & answers or comments about the causes & frequency of occurrence of dangerous leaks or moisture in electrical panels. .
Try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly.
Search the InspectApedia website
Note: appearance of your Comment below may be delayed: if your comment contains an image, photograph, web link, or text that looks to the software as if it might be a web link, your posting will appear after it has been approved by a moderator. Apologies for the delay.
Only one image can be added per comment but you can post as many comments, and therefore images, as you like.
You will not receive a notification when a response to your question has been posted.
Please bookmark this page to make it easy for you to check back for our response.
Our Comment Box is provided by Countable Web Productions countable.ca
In addition to any citations in the article above, a full list is available on request.