Home Inspection Electrical Practice Test

These questions are part of the practice quiz. Start practicing

• What is the minimum required clearance in front of the main electrical panel box?
• Which location is not listed as requiring GFCI protection in new homes?
• Are feeder wires from special logs in the main panel acceptable as subpanel wiring?
• What is identified as an important improvement between knob-and-tube wiring and modern cable?
• The bus bar in a main panel is primarily used to:
• BX cable is also called which?
• In the same scenario, what safety hazard is present?
• Which of the following best describes NM cable?
• There should be no open connections in or around the house.
• What amperage is required to power a 1200 watt hair dryer on a 120 volt system?
• If you have a double breaker labeled 100 amps, what is the amperage rating of the main disconnect breaker?
• The home inspector is required to determine if aluminum branch circuit wiring is safe.
• Which of the following are common reasons for replacing knob-and-tube wiring?
• Breakers are safer than fuses, and fuses should be upgraded to breakers.
• Which scenario should be reported as a safety hazard requiring electrician evaluation?
• AC cable commonly known as BX contains a bare aluminum wire. What is its purpose?
• Why should knob and tube wiring never be buried under thermal insulation?
• The home inspector is required to use a GFCI tester and neon bulb tester at the main panel.
• NEC requires there to be power sources in each room.
• Which slot on a standard outlet is hot?
• NM cable is commonly referred to as Romex. Which term is NM cable associated with?
• Which closet lighting configuration is allowed in a residential setting?
• 2 conductor wiring can be used with a GFCI?
• A 3-prong receptacle with an open ground on an older two-wire system should be replaced with:
• Which method of subpanel wiring is not acceptable?
• A main disconnect with two 60-amp fuses would indicate what service amperage?
• What is the minimum copper wire size for a 60-amp service?
• The hot conductor on an outlet is connected to which slot?
• Copalum crimp connectors are used to bond copper to aluminum wiring at every connection.
• The home inspector is not required to dismantle connections at junction boxes.
• Would water pooling stop a home inspector from inspecting the main panel?
• Which condition would not stop a home inspector from inspecting a main panel?
• Non-metallic sheathed cables in an attic top of joists must be fastened every how many feet?
• What gauge were the incoming service conductors in the described scenario?
• If aluminum circuit wiring is found in a home, what action should the inspector take?
• What is the overall purpose of an electrical inspection?
• Electrical cords overhanging the electrical heating unit can be overheated.
• Identify the components of a single-bus main panel.
• NM cable is an abbreviation that stands for what?
• The home inspector is required to check all rooms for AFCI protection.
• Handyman wiring, open junction box with wires exposed, and reverse polarity in kitchen are described as safety hazards. What should the inspector report?
• For a 60-amp service, what is the minimum copper conductor size?
• NEC service drop clearance from the roof line is 18 inches. Which option correctly lists this clearance?
• If the main disconnect uses fuses, which statement is correct?
• A non-grounded receptacle within 6 feet of water should be replaced with?
• Grounding rod must be driven to what depth for proper protection?
• A bathroom outlet 12 inches above an electric heating unit is an unsafe practice.
• Wiring should be run through wood framing members rather than stapled to the edges.
• GFCIs are required in new homes in which locations?
• The home inspector is not required to complete an exhaustive inspection.
• Are aluminum main wires safe and commonly used?
• The home inspector is required to dismantle connections at junction boxes.
• To avoid mechanical damage, where must branch circuit connections be enclosed according to NEC?
• Should under-sized wires or uncovered junction boxes with exposed wiring be listed as a safety hazard?
• Would the home inspector refrain from inspecting a main panel if heat is felt when touching the cover?
• When aluminum branch circuit wiring is found in a home, what should the home inspector do?
• Which electrical meter most likely indicates the largest service amperage?
• Which statement best defines electrical resistance?
• Resistance is measured in which unit?
• The presence of a double tap on main wires should lead to what recommended action?
• NM stands for which term in electrical wiring?
• How do standards describe the inspection of a home electrical system?
• NEC service drop clearance from the driveway is 12 feet. Which option lists this correctly?
• In the described service scenario, what is the service amperage rating to report?
• On rural properties with plastic oil piping entering the house, how are systems typically grounded?
• What is most commonly used as branch circuit wiring in most modern homes?
• In a standard 240-volt residential system, how many conductors typically enter from the street?
• Is the home inspector required to operate all GFCIs?
• If hazards are found, what is the recommended action?
• What is the most common electrical flaw found in residential wiring?
• The home inspector is required to observe branch circuit conductors.
• According to the material, is a kitchen counter or sink outlet required to be GFCI protected?
• Are connections in branch circuit wiring required to be enclosed in junction boxes per NEC?
• The maximum number of disconnects for a main power electrical panel is:
• In standard electrical outlet wiring, to which screw is the hot wire connected?
• Which of the following is listed as an acceptable GFCI protection method when replacing a non-grounded receptacle near water?
• True or False: A bathroom outlet installed 12 inches above a heating unit is considered a safety hazard.
• Which type of cable is commonly used as branch circuit wiring in most modern homes?
• Non-metallic sheathed cables in an attic on top of joists must be which of the following?
• In a 240-volt system, how many wires run from street to house?
• Which action is not typically performed in a standard home electrical inspection?
• Panel clearance requirements specify a minimum of 30 inches wide by 36 inches front clearance.
• Which statement about NM cable is correct?
• Which condition would be considered a safety hazard at the main disconnect?
• Which description best captures the visual inspection component of a home electrical inspection?
• Sub panel requirements state which of the following is correct?
• What is the maximum number of disconnects allowed to shut off the main panel?
• What is the rating of the main panel in the described scenario?
• In a subpanel, which statement describes the proper handling of neutral and ground conductors?
• The grounding conductor should always be clamped upstream of the water meter.
• Grounding depth of 8 feet is required for proper protection.
• Tapping before the main disconnect is considered unsafe.
• NEC service drop clearance from windows is 3 feet. Which option lists this correctly?
• Which action is required by most standards of practice in the electrical inspection?
• For which of the following conditions should an electrician be called to evaluate the service?
• A material with high resistance is typically considered what?
• The size of the fuses or breakers at the main disconnect will always tell you how much electricity is available to the house.
• A 3-prong receptacle on an older two-wire system with an open ground should be replaced with which?
• Knob-and-tube wiring replacement is commonly driven by which factors?
• NEC service drop clearance from the yard is 10 feet. Which option lists this correctly?
• Which type of cable is commonly used for branch circuits in modern homes and is non-metallic?
• A fused neutral is considered what?
• Over yards, the NEC minimum overhead clearance for service drops is which of the following?
• In a main electrical panel, what is the purpose of the grounding bar?
• Which cable type is commonly used as branch circuit wiring in homes and is often referred to by the trade name NM?
• If aluminum branch circuit wiring is present, what is the inspector's obligation?
• What determines the amperage the wire can carry?
• If handyman wiring is found, what should the home inspector recommend regarding the electrical service?
• Which action is not typically performed in a standard home electrical inspection?
• Low voltage lighting systems are inspected according to industry standards.
• In outlet wiring, which is hot?
• In electrical terms, which quantity corresponds to electromotive force (EMF)?
• In outlet wiring, which part is hot?
• How does a home inspector test a GFCI at the main panel?
• True or False: A bathroom outlet located 12 inches above an electric heating unit is considered a safety hazard.
• Which is an example of improper installation of branch circuit wiring?
• Which statement best describes GFCI outlets according to the material?
• Which safety step should a home inspector take to protect the customer during the inspection?
• Is a bathroom outlet located 12 inches above a heating unit considered a safety hazard?
• Fuses are more prone to improper sizing and overloads.
• Which formula shows the relationship between wattage, voltage, and amperage?
• Which two types of service conductors require the same gauge for a given amperage rating?
• The home inspector is required to check lighting, power source, and heat source for each room.
• A sump pump on a dedicated receptacle or circuit has what GFCI requirement?
• What should the inspector advise if the main panel is underrated for the service amperage?
• If the main panel is underrated for service amperage, what should the inspector suggest?
• Nonmetallic cable is commonly known as what other term?
• According to electrical inspection standards, how is the inspection described?
• When inspecting a main breaker, the home inspector should?
• Which combination of actions is described as the inspector's duties in the material?
• Which statement best reflects subpanel grounding and neutral arrangement?
• Is Copalum crimp connector bonding copper to aluminum at every connection the most highly recommended repair method for aluminum branch circuit wiring?
• What is the required headroom clearance at the main electrical panel?
• The home inspector is required to report aluminum branch circuit wiring.
• Is subpanel wiring from a 240-volt breaker in the main panel acceptable?
• When a GFCI is installed on a two wire non grounded system it provides?
• Which statement about NM cable's use in homes?
• BX cable is also called
• Which statement about the home inspector's handling of the main disconnect and main overload protection devices is correct?
• A non grounded receptacle within 6 feet of water should be replaced with?
• If two 100-amp fuses feed a 60-amp main panel, this configuration is a potential hazard because:
• A clothes dryer outlet must have which of the following?
• Which of the following describes the inspection of branch circuit wiring under most standards?
• Which term is used to measure electromotive force (EMF) in circuits?
• For driveways, what minimum overhead clearance does NEC require for the service drop?
• A new clothes dryer outlet must have which of the following?
• Which of the following conditions at the main panel should be reported as safety hazards?
• According to most standards, which statement is true about CO detector inspection?
• What are the NEC required service drop clearances?
• Which statement best describes Romex?
• Which property most directly determines the amperage rating of a wire?
• Would electrical arcing stop a home inspector from inspecting the main panel?
• The plug in under the kitchen counter or sink is not required to be GFCI protected.
• Is security system wiring typically required to be inspected?
• What is the correct size copper wire for a 20 amp breaker?
• Does a sump require a GFCI?
• What is the purpose of the bare aluminum wire in BX cable?
• Reverse polarity is associated with which hazard?
• What would be considered a safety hazard at the main disconnect?
• An unused knockout is defined as which of the following?
• In a subpanel, how should the neutral conductor be treated relative to the panel?
• Which of the following statements about GFCI protection is consistent with NEC guidance provided?
• Which statement about Copalum crimp connectors is true?
• In older homes, what is a common grounding path?
• Which screw color is used for hot conductors on outlets?
• Romex is allowed to be stapled to the edges in attics as long as protected if in walkway.
• BX cable is also called which of the following?
• Is it acceptable for three distribution wires connected to one fuse or breaker?
• Which term describes electrical resistance?
• How is grounding typically achieved in most older homes?
• Reverse polarity is considered which type of hazard?
• Which statement correctly identifies the hot conductor on a standard outlet?
• NEC service drop clearance above pools with diving boards is 21 feet. Which option lists this correctly?
• What should the inspector observe regarding branch circuits?
• According to most standards, are low voltage systems required to be inspected?
• What would be the voltage rating of an electrical service with two conductors entering the house at the Masthead?
• All outlets should have GFCI protection per NEC requirement.
• Two-conductor wiring can be used with a GFCI.
• What is an unused knockout?
• When testing a GFCI at the main panel, which sequence demonstrates proper operation?