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ELECTRICAL INSPECTION, DIAGNOSIS, REPAIR
AFCIs ARC FAULT CIRCUIT INTERRUPTERS
ALUMINUM WIRING HAZARDS & REPAIRS
AMPS VOLTS DETERMINATION
AMPERAGE MEASUREMENT METHODS
APPLIANCE EFFICIENCY RATINGS
BOOKSTORE - ELECTRICAL
Cadet & Encore Heater Recall
CIRCUIT BREAKER SIZE for A/C or HEAT PUMP
Classified CIRCUIT BREAKER WARNING
CUTLER HAMMER PANEL FIRE
CORROSION in ELECTRICAL PANELS
DEFINITIONS of ELECTRICAL TERMS
DIRECTORY OF ELECTRICIANS
DMM Digital Multimeter HOW TO USE
ELECTRIC METERS & METER BASES
ELECTRIC MOTOR DIAGNOSTIC GUIDE
ELECTRIC MOTOR OVERLOAD RESET SWITCH
ELECTRIC PANEL AMPACITY
ELECTRIC PANEL INSPECTION
ELECTRIC PANEL MOISTURE
Electric Power Frequency Table
EMF RF FIELD & FREQUENCY DEFINITIONS
ELECTRICAL GROUND SYSTEM INSPECTION
ELECTRICAL SERVICE DROP
ELECTRICAL SERVICE ENTRY WIRING
EMF RF FIELD & FREQUENCY DEFINITIONS
FIRE SAFETY Checklist, CPSC
GFCI PROTECTION,Testing GFCIs AFCIs
HEATING COST FUEL & BTU Cost Table
HEAT TAPE USAGE GUIDE
Hertz - Definitions of KHz MHz GHz THz
KNOB & TUBE WIRING
LIGHTING, EXTERIOR GUIDE
LIGHTING, INTERIOR GUIDE
LIGHTNING PROTECTION SYSTEMS
LOW VOLTAGE BUILDING WIRING
LOW VOLTAGE TRANSFORMER TEST
MAIN DISCONNECT AMPACITY
MOISTURE SOURCES in PANELS
MURRAY SIEMENS Recall
PHOTOVOLTAIC POWER SYSTEMS
PUSHMATIC - BULLDOG PANELS
REMOTE ELECTRIC POWER, PHOTOVOLTAIC
RUST in ELECTRICAL PANELS
SAFETY for ELECTRICAL INSPECTORS
SE CABLE SIZES vs AMPS
SIEMENS MURRAY Recall
THERMAL EXPANSION of HOT WATER
THERMAL EXPANSION of MATERIALS
UNDERGROUND SERVICE LATERALS
VOLTS / AMPS MEASUREMENT EQUIP
VOLTAGE MEASUREMENT METHODS
WIND TURBINES & LIGHTNING
ZINSCO SYLVANIA ELECTRICAL PANELS
This electrical safety procedures article discusses safety hazards at residential electrical systems both outside and indoors, and suggests safety procedures for the electrical inspector, home inspector, or other professionals who examine residential electrical systems. Safe electrical inspection procedures and safe use of volt meters, DMMs, multimeters, and similar electrical test equipment is discussed at the end of the article.
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Safety Suggestions for Electrical Inspectors: Electrical System Inspection Safety Procedures, Observations, Reports
ASHI Home Inspector Educational Seminar Proceedings: ASHI-NE Chapter Annual conference
This is the full text version. A powerpoint presentation version of this class is also available. Readers of this article should also see these other building inspection safety articles: Safety for Building Inspectors and Septic Inspection Safety and also STAIRS, RAILINGS, LANDINGS, RAMPS - INSPECTIONS, CODES
These electrical inspection suggestions are not a complete inventory of all electrical safety procedures nor of all electrical components that should be inspected; these notes focus on identification of conditions that may present special electrical hazards for the electrical inspector. Contact Us by email to suggest changes, corrections, and additions to this material.
Electric shocks are responsible for about 1,000 deaths in the United States each year, or about 1% of all accidental deaths.- Refs.
Fatal Shock Hazard Warning: Inspecting electrical components and systems risks death by electrocution as well as serious burns or other injuries to the inspector or to others. Do not attempt these tasks unless you are properly trained and equipped.
Homeowner advice for electrical panel safety: These safety suggestions are for professional inspectors and are not a guide for homeowners. Homeowners should not remove the cover from an electrical panel - it is unsafe to do so. Homeowners should look at their electrical equipment for signs of trouble and should contact a licensed electrician to address any concerns that arise. Without removing the electrical panel cover, but by opening the hinged electrical panel access door, homeowners can access the main circuit breaker or fuse, as well as individual circuit breakers and fuses. These devices may be turned on or off by the homeowner as safety or other needs require.
Reports of deaths during home inspections: ASHI, the American Society of Home Inspectors, has reported (to DF) a single death of an inspector while at work. A Canadian home inspector fell from an improperly installed steel ladder "affixed" to a multi-story building. That tragic death which was reported (by NY Metro ASHI News) in 1990.
Inspectors climbing in, on, around buildings should guard against becoming complacent, overconfident, or careless. ASHI Standards of Practice provide that an inspector may refuse to enter, inspect, access any component based on concern for safety. In our photo the inspector is pointing out how easily an inspector might touch live electrical components while also becoming grounded by a gas pipe.
Reports of injuries during home inspections: There have been reports of falls and fall-related injuries, reports of electric shock, reports of threats of violence, and one report of an attempted murder of a home inspector by a real estate agent. [SV to DF, New Paltz NY, re D.B. realtor, ca 1992].
As of September 2008, we have not heard reports of serious injuries to home inspectors or their clients during the inspection of electrical components. Electrical shocks, injuries, and fires certainly occur in residential as well as commercial environments.
Wet skin (standing in water, sweaty) has a resistance of about 1000 ohms. (Dry skin will have a higher resistance, and of course an inspector wearing protective gear such as rubber gloves, rubber-soled shoes, standing on an insulated mat, will have still higher electrical resistance, and safety.)
At this skin resistance, a current of only 0.1 to 0.3 amps at 100 Volts is sufficient to cause potentially fatal ventricular fibrillation. -- Wikipedia September 2008.
Since the Standards of Practice for home inspectors (such as those published by ASHI, NAHI, CREIA, and CAHI) require home inspectors to open electric panels, a task not performed in many states during some other types of inspections, we and our clients face additional risks.
The gruesome death by electrocution shown in the photograph occurred when the man shown tried to steal electrical power from a high voltage cable. - Jim Simmons
In a much less serious incident, the author had the personal experience of having a client ask "What's that?" as he reached over our shoulder to stick his finger right into an open fuse socket.
Among many reports of fires and accidents whose origin was suspected to be electrical, are reported deaths of a number of electricians and electrical workers - people working in some of the same high-risk areas examined by inspectors.
Portions of the ASHI Standards of Practice for home inspectors is commented upon below.
ASHI Standards and other building inspection standards are revised from time to time, and the version of Standards discussed here may be obsolete. However the principles discussed and cautions advised will apply to newer versions of building inspection standards as well.
ASHI is the American Society of Home Inspectors - see www.ashi.com. Other home inspection professional associations such as CREIA, NAHI, FABI, TAREI, CAHI, NACHI, and the various U.S. states who license home inspectors have published their own versions of these standards. Home inspection standards are a definition of the scope of practice - what the inspector is obligated to do or not do.
ELECTRICAL INSPECTOR SAFETY PROCEDURES describes important basic safety procedures, clothing, and equipment for home inspectors and electrical inspectors.
Keep in mind that this determination is required by ASHI Standards and is to be derived based on visual inspection of the wiring and equipment. It is not required to use test equipment for this purpose. Sketch courtesy of Carson Dunlop Associates.
[Click to enlarge any image]
see Outside Electrical Inspection for details of outside electrical inspection safety procedures.
See ELECTRIC METERS & METER BASES for a discussion of examining the electric meter and meter base portion of the service entry.
See AMPS & VOLTS DETERMINATION for determining the ampacity of an electrical service: How to determine the electrical Ampacity and Voltage provided to a building discusses in detail how to determine the service amps and voltage by visual inspection.
Also see AMPACITY - the LIMITING FACTOR.
Pay special attention to water entry at the service entry cable, at the top of the electric meter enclosure, and at the wall penetration where the SEC enters the building as these conditions can send water into the electrical panel where corrosion creates unreliable equipment and water is a hazard.
Dropped sheet metal screws & loose electric meter boxes: be careful about dropping a metal screw into or onto live electrical parts.
If you see that the electrical meter box is loose on the building wall, do not touch it.
A loose mounting screw can fall into the meter box, shorting electrical components there and leading to a house fire. -- Arnold Road Poughkeepsie NY house fire - J. Aronstein & D. Friedman.
See ELECTRIC METERS & METER BASES for procedures used for inspecting these outdoor components.
Details about inspecting electrical grounding and definitions are at ELECTRICAL GROUND SYSTEM INSPECTION.
8.3.C. [The inspector is NOT required to] dismantle any electrical device or control other than to remove the covers of the main and auxiliary distribution panels.
At least one death, that of an electrician, has been reported to have occurred during the removal of a panel cover
The following photos and text provide examples of external evidence that may let the inspector avoid trouble or a nasty surprise when inspecting electrical equipment.
A cold water pipe produces condensation which drips on the panel top. This pipe is too close and is in a poor location over this electrical service box.
The pair of photographs below show two clear warnings that water has been entering an electrical panel - watch out for rust, and for circuit breakers that may not trip in response to an overcurrent, due to internal corrosion.
This defect is not one for which a home inspector (nor most electricians) can reliably test in a home, but the warning remains appropriate. Replace such breakers, and if the electrical panel is badly corroded the entire panel needs replacement.
See RUST in ELECTRICAL PANELS for a detailed account of the sources of water and rust in electrical panels and the frequency of observation of rust and water damage in that equipment.
At an inspection the author had encouraged a nervous buyer to accompany him into an ugly dark muddy basement to inspect the mechanical systems.
The client, a woman not properly dressed for an inspection, wore high heels and a tight skirt.
She was wobbling in the dirt floor in a dark crowded corner of the basement, terrified and already shaking in the dim light. The author, encountering a maze of wires in the way of the electrical panel, forgot to edit his thoughts, and muttered aloud: "geez what a rats nest."
The client screamed "RATS!!!" and ran terrified from the basement, falling towards the dark stairs.
This distraction is more risky than it may appear. A sudden flash, a sudden shout or movement, could cause an inspector to lurch, touching an electrically live and dangerous component. It is important for the inspector to learn and practice calm, steady movements and to resist distractions.
How to Look for Unsafe Panel Cover Screws & for Evidence of Burning and Arcing When Approaching the Electrical Panel
The pair of photos just below shows at left, electrical arc flashover soot, and at right, the repair - tape on the electrical wire, but the wire is still too close to the screw mounting hole for the panel cover.
Sharp sheet metal screws: If you find that a sharp-tipped sheet metal screw has been used (usually to replace a lost original fastener) you should be alert for pierced, damaged, short-circuited wires in the panel - both during removal and during panel cover replacement.
We will not reinstall a sharp-pointed screw in a panel cover if wires are crowded close to the screw opening. Having seen more than one shorted and burned panel from precisely this cause, we warn clients about this unsafe detail. It is trivial to correct.
It's an easy fix: use a blunt tipped screw, or file off the sharp point of the SMS.
Before re-installing the cover of the electrical panel, check to assure that no electrical wires have moved close to the panel cover screw mounting holes where they might be pierced or damaged.
Now that we have removed the cover and carefully set the cover and screws aside (don't lose the screws),
8.3.B. [The inspector is NOT required to] test or operate any overcurrent device except Ground Fault Circuit Interrupters
Pulling fuse blocks: At one inspection the author pulled the main fuse block in a 60-Amp panel, only to have the pullout block disintegrate in his hand.
The failure left one fuse in place and one half out of the panel.
"What did you just do to the panel?" asked the client (from a safe distance).
"I destroyed it." was the answer.
With permission of the owner, and following accepted home inspection practice of exercising normal user controls intended for use by the homeowner, the home inspector was performing a normal, if uncommon operation which a homeowner would be expected to do, for example, during an emergency or other need to shut off electrical power to the building.
At a minimum one would have had to perform this operation during an emergency or if the panel were to be worked on.
The client wanted to know if the fuse pullout disintegration was normal. [No.]
The inspector wanted to know if he was going to pay for a new panel. [No.] [A new panel was needed as the service and equipment were obsolete, not because the fuse pullout needed replacement.]
If you had not pulled the fuse shown at lower right in this photo, something interesting would have been missed.
Is that smaller fuse unsafe? What about the other wiring in the panel? Are some of the edison-base fuses oversized?
8.1.D. [The inspector shall observe] branch circuit conductors, their overcurrent devices, and the compatibility of their ampacities and voltages
In addition to examining the electrical panel before touching it, looking for dangerous conditions like water, rust, sheet metal screws, rats, and blocking client access, the inspector should also recognize that certain brands or models of electrical equipment are known to be unsafe and may be dangerous to inspect or operate.
Federal Pacific Electric Stab-Lok equipment includes breakers which remain internally "on" when switched "off", as well as too often failing to trip off in response to an overcurrent, and which have been reported to result in electrical arc explosions when manually or otherwise exercised.
Zinsco: Similar bus burnups and electrical arc explosions have been reported regarding Sylvania/Zinsco electrical panels.
Contact Us by email to add field reports of problems regarding these or other electrical products.
Opening the electrical panel to examine overcurrent devices - fuses or circuit breakers, is discussed at ELEC PANEL & GROUND
Inspecting overcurrent devices - visual: see ELECTRIC PANEL AMPACITY and ELECTRIC PANEL INSPECTION for detailed procedures. There is a huge amount of information about the electrical system inside of the electrical panels.
The inspector is not required to insert anything, finger, screwdriver, probe, into the electrical panel. The required inspection is visual. Observe. However an inspector is of course permitted to perform other tests or services which s/he chooses to provide (presuming s/he is qualified, trained, and that three are no conflicts of interest).
Inspecting wiring - visual: gain, a visual inspection of the wire size compared with breaker ratings is what is meant by this section. If you need them, plastic, non-conductive wire gauges are available. Do not use metal wire gauges in or around electrical equipment.
Reporting aluminum wire: see ALUMINUM WIRING HAZARDS & REPAIRS
Reporting knob and tube wiring: see KNOB & TUBE WIRING
8.1.E. [The inspector shall observe] the operation of a representative number of installed lighting fixtures, switches, and receptacles located inside the house, garage, and on its exterior walls
Before operating a switch or device perform a visual inspection for damage, looseness, burning or arcing, or heat.
Devices missing cover plates are unsafe and risk both shock and fire.
Metal cover plates also add shock risks.
Watch out about turning on switches found off in the service panel.
A circuit found in the off position may be that way due to an unsafe condition or a repair in progress. Leave it off and document the finding. The property owner should be consulted for permission before turning on any electrical device which has been found shut down.
The light shown in our photo is a fire hazard and needs to be moved or replaced with an enclosed florescent fixture.
Also be careful about turning off switches found on. You may damage a computer data base, turn off a heart-lung machine, reset an alarm system, or turn off a marginal switch for the heat that leaves the property with no heat in freezing weather. Be safe and avoid disputes.
An example of accidentally switching off circuits in a building occurs often during removal of an awkward electrical panel cover - it's easy to accidentally push one or more circuit breakers into their off position during cover removal or replacement.
8.1.F. [The inspector shall observe] the polarity and grounding of all receptacles within six feet of interior plumbing fixtures, and all receptacles in the garage or carport, and on the exterior of inspected structures
Testing is commonly performed using one of a variety of electrical testers. First perform the visual inspection for overheating, looseness, arcing as noted above for switches. If a device is quite loose we do not test further but report it as a required repair. [See "Electrical Receptacles" in this issue.]
8.1.G. [The inspector shall observe] the operation of Ground Fault Circuit Interrupters.
While manual operation of these devices using their internal test button is possible, experience and information about the construction and operation of these devices and the circuits which they serve suggest that testing using GFI-test equipment adds additional information and will find defects not disclosed by manual operation. See "GFCI's" in the original issue of the ASHI Technical Journal.
AFCIs: The requirement to inspect and test AFCIs is already in some regulations for home inspectors. It seems likely that remaining home inspection associations and state or provincial inspection standards-writers will soon update their electrical inspection standards section to address the new requirement for AFCI's. See AFCIs ARC FAULT CIRCUIT INTERRUPTERS for details of the electrical code changes regarding the requirement for arc fault interrupters in homes.
AFCIs can be properly tested only by using the test button on the device itself. External tool tests are incomplete and therefore unreliable.
Some inspectors, with adequate training, exceed the requirements of the standards and will actually shut down extremely dangerous equipment themselves.
Even the simple task of pulling the cover on a marginal bimetallic stack relay switch on an oil-fired heater can result in failure or inadvertent shutdown of the equipment.
Stack relays have a stepping lever which is reset by the service person if the switch, often fragile on old systems, is disturbed.
Be warned that whether you touch a building component or not there are grave responsibilities.
Touching a building component: if you precipitate a catastrophe, will of course be viewed as a mistake.
Not touching a building component: Failing to act effectively to protect occupants of a building you inspect will, of course, also be viewed as a mistake. If you failed to inspect, detect, report a hazard in a building you may bear liability if later an event occurs.
Disclaimers: A simple disclaimer "not inspected" is in adequate. An adequate disclaimer that meets ASHI standards makes sure that the client understands the significance of an observation [or of steps to omit making an observation].
The last man in rule: Trade and professional education classes concerning mechanical systems, which can involve life-safety concerns, commonly teach the "last man in" rule. Home inspectors know this problem as well. The last "expert" to set foot on the property is vulnerable to blame for any ensuing failures, even if s/he acted entirely correctly and even if s/he never touched the component later in question.
In the final analysis then, the precise safety steps to be taken are up to the judgment of the inspector at the scene. The inspector should also document his or her action. Failing to do anything and failing to even serve notice may be viewed as very dangerous and seriously irresponsible.
With proper training, knowledge, and procedures, electrical inspections can be done safely and accurately. Be careful.
From a safety view, this is a bad idea. Never rely on physical touch to judge electrical safety of a component.
Details about the hazards of touching electrical equipment and alternative advice for determining whether or not equipment is safe to inspect are provided at Touching Electrical Equipment.
Stop, look, listen before touching. More on "just looking" is provided when we discuss opening the electrical panel. Do not rely on touch to determine if electrical equipment is safe. Details about the hazards of touching electrical equipment and alternative advice for determining whether or not equipment is safe to inspect are provided at Touching Electrical Equipment.
This is a superb safety tool for testing for the presence of live 120VAC or 240VAC because you do not actually need to touch the tool to anything - just hold the tool near a source of electrical power and the electrical field produced will cause the tool to generate its tone. Faster "ticking" indicates higher voltage; slow ticking can indicate a wire connected to a live circuit even if the wire is not presently conducting current.
With practice the inspector can guess the voltage level from the tone quality.
We use this tool to check light sockets for power when there is no bulb or the bulb is dark. We also use this tool to look for lost or hidden wiring in walls and ceilings.
Its sensitivity falls off with the square of the distance from the source of electrical power.
Weird and interesting behavior of the TIF Tic Tracer: Some ASHI NE chapter inspectors pointed out that this device can be "fooled" into thinking that a wire scrap is "live" or that even a pipe is electrically "live" when it is not.
If a live electrical wire passes close enough to another metal device such as a pipe, electrical conduit, or armored cable, the metal device, conduit, or cable may pick up the electrical field generated by the "live wire" and appear "live" itself when it is not. (This is a "safe" error in that it errs in the direction of warning that something is live when it is not.)
This tool will also respond to momentary static electricity. In winter, simply rubbing its tip quickly across a wall can produce a momentary sound response. (Which can be fun in certain circumstances.)
The Tic Tracer™ is discussed further at TOUCHING EQUIPMENT. Inspectors who object to the "false positive" possibility make use of a light-pen or similar tool which performs similar functions with less sensitivity to false positives.
A simple neon tester is perhaps the simplest, most versatile tool for checking for the presence or absence of voltage.
Just touch one leg of the tester to the surface to be checked (a wire terminal or an electrical panel enclosure).
Touch the second leg of the neon tester to a sure-ground such as a water pipe that you see continues into soil.
If voltage is present within the range of sensitivity of the neon tester's bulb, the bulb will light.
We discuss neon testers for voltage at Electrical Tools Every Homeowner Should Have
Receptacle testers are used by most home inspectors to check for proper wiring at electrical receptacles as well as to check the function of GFCI's.
For testing AFCI's the only reliable test currently available is the device's own test button.
We provide details about using receptacle testers at Electrical Tools Every Homeowner Should Have
Neither of these neat little electrical test tools can be relied on to report low levels of current leakage.
A simple volt ohm meter volt-ohmeter (VOM) such as the TriplettTM 310 or our little mini digital multimeter (DMM) shown at left can be used to test for unexpected and unsafe voltage at a component.
NOTE: Once having tested at the highest voltage range, greater accuracy may be obtained by choosing more sensitive ranges which permit readings to be taken in the upper portion of the scale. Disconnect the test probes (or shut off the voltage source) before changing the voltage range setting on the VOM.
Details on safe use of DMM's and VOMs are at DMMs VOMs SAFE USE OF.
For example, if the meter indicates more than 1or 2 volts between a service panel cover and ground, there's a safety problem. Most low-cost analog-type meters such as the one described provide additional ranges used to read lower voltages with more sensitivity.
Some VOM models provide alligator clips for the ends of the test probes. These clips permit measuring high voltage without handling the probes. Always shut off the power before connecting the alligator clips.
8.3 During an electrical system inspection the inspector is NOT required to
Use only DMM's (digital multi meters) or VOMs (volt-ohm meters, the analog predecessors to DMMs) designed for high energy measurements.
Details about safe use of VOMs and DMMs are provided at DMMs VOMs SAFE USE OF.
These electrical inspection suggestions are not a complete inventory of all electrical components that should be inspected; these notes focus on identification of conditions that may present special electrical hazards for the electrical inspector. Contact Us by email to suggest changes, corrections, and additions to this material.
Pay attention, look carefully, move slowly before opening or exploring electrical equipment. Learn to recognize indications of a problem, such as but not limited to the examples in this article.
Do not assume anything when performing dangerous tasks such as inspecting electrical equipment.
Do not touch live wires or connections. Watch your hands and other body parts. Handling live electrical wires without special training and equipment is highly questionable and often fatal.
If in your opinion unsafe conditions exist at a property you are inspecting you should notify all parties concerned, including building occupants/management/owners, realtors involved, and other appropriate authorities.
For example, what if the case above had happened the day after the property described had been examined by an ASHI inspector? Were there perhaps clues which telegraph a developing problem? What about anecdotal reports from the occupants of recurrent breaker tripping, visible signs of overheating in the panel, widespread and unusual use of electric heaters, or evidence of work in the panel by untrained people? These risks to occupants are also a hazard to the inspector on several bases.
Protect yourself and your client from injury using but not limited to the suggestions we provide here and just below.
OPINION-RC: "As a master electrician, here is how I teach opening a service panel in my seminars: "The lucky 7""
Further Safety Warning--DF: these are helpful electrical safety suggestions from an experienced electrician. No list of suggestions is incomplete and these presume that they are being followed by an experienced, licensed electrician.
For example, there are almost certainly gloves and/or boots specifically recommended for this application; there are specific safety details to look at and for before touching an electrical panel, and procedures for using electrical test equipment to test or examine a suspect electrical panel.
Rex Cauldwell's Wiring A House - available online.
Rex Cauldwell's Safe Home Wiring Projects - available online
Recommending action on an unsafe condition can convert a pre-existing problem into an immediate catastrophe if the client or owner calls an untrained person to the property or if he attempts a do-it-yourself repair.
Often a referral to local fire inspector, electrical inspector, or utility company can help assure that repairs are prompt, proper, and safe. If you recommend immediate action for an unsafe condition, where possible you should provide some means for the client or building owner to assure that the action which is taken is proper and safe.
Inspectors are properly nervous and reluctant to prescribe the actual repair that is needed at a property - they may not know the detailed repair procedure, or there may be alternative repairs, or their description may prompt an un-trained person to try to do the work.
The Building Owner or Building Manager Needs to Know About Unsafe Conditions that Need Immediate Action
The inspector should inform the appropriate parties both orally and in writing any suspected unsafe conditions.
Report Building Areas, Systems, or Components that Could Not be Inspected
If an area or component of a building or any of its systems could not be fully inspected, the inspector should explain in writing why she or he did not enter or examine an area or component, and what additional inspections or steps should be taken, as well as the general risks that may be present.
If in the inspector's judgment equipment is an immediate threat to life and property, such as a boiler whose flue connection has fallen off, we recommend that dangerous equipment be shut down and the appropriate people notified. See Shutting Down Unsafe Equipment. In some cases "appropriate people" includes not only the client and building owner, but also building occupants.
In some instances such as sparking electrical panels, gas leaks, or evidence of a fire, the inspector and everyone else should leave the building immediately and from outside, call the fire department and as appropriate, the gas company, police, or rescue personnel.
ELECTRICAL INSPECTOR SAFETY PROCEDURES describes important basic safety procedures, clothing, and equipment for home inspectors and electrical inspectors.
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