Residential Electrical Inspection 2024-
2025 Edition. Real Questions with
Correct Answers. Graded A+
100-amp
4 AWG
2 AWG AL
SE cable - ANS150-amp
1 AWG
2/0 AWG AL
SE cable
15-amp: #14/2 with ground NM
-
Lighting circuits and typical general-use receptacles in living area.
Dishwasher. Disposal. Refrigerator/freezer. - ANS20-amp: #12/2 with
ground NM
-
Receptacle and switches in kitchen, laundry, bathrooms, and dining rooms.
Microwave, Dishwasher. Disposal. Refrigerator/freezer. Hydro massage
tub.
200-amp
2/0 AWG
4/0 AWG AL
SE cable - ANS
,240-volt appliances are fed from two 120-volt conductors, each connected
to a separate bus bar in the distribution panel. It is imperative that, when
one of the circuits trips due to an over-current condition, both conductors
are de-energized at the same time. For this reason, all breakers supplying
240 volts are required to have the handles tied together by a listed handle
tie. - ANS
3-phase supplies have three hot (or ungrounded) conductors, and there
may also be a neutral or grounded conductor. Each of these phases, or
legs, carries 120 volts at a different phase from the others. How and from
where power is taken in these phased supplies produces different types of
supply current. The common services include 120, 240, 208 and 480 volts.
- ANS
3-Wire Appliances, prior to the adoption of the 1996 NEC code revisions, 3-
wire, 240V supplies were common. The cable assembly carries:
1. two 120-volt ungrounded (hot) conductors; and
2. one grounded (neutral) conductor.
As there is no separate grounding means in this installation, the metal
frame of the appliance was allowed to be bonded to the neutral. This is no
longer allowed in new construction. - ANS4-Wire Appliances, since
adoption of the 1996 NEC, all 240V circuits are required to be 4-conductor
assemblies carrying:
1. two 120V ungrounded (hot) conductors;
2. one grounded (neutral) conductor; and
3. one equipment grounding conductor.
,30-amp: #10/3 with ground NM
-
Water heater. Clothes dryer. Condensing unit. - ANS40-amp: #8/3 with
ground NM
6/6/6/6 AL SER
Oven. Cooktop. Range.
50-amp: #6/3 with ground NM
4/4/4/6 AL SER
Oven. Cooktop. Range. - ANS100-amp: 3 AWG
1 AWG AL
remote distribution panel
A 240-volt circuit breaker also acts as the main disconnecting means in
modern panels, disconnecting all the electrical power in the home. - ANS
a GFCI breaker, or a correctly wired GFCI receptacle, can protect all
outlets farther downstream. - ANSThere are four basic types of GFCI in
common usage, and two or three of them are common in residential
construction. They are:
1. GFCI breakers in the distribution panel;
2. GFCI receptacles at in-home locations;
3. stand-alone GFCIs, as sometimes used with pools; and
4. extension cords with built-in protection, primarily found on construction
sites.
, A switch must not be installed within a wet location in a tub or shower
space, unless it is installed as part of a listed tub or shower assembly.A
surface-mounted switch located in a damp or wet location must be
enclosed in a weatherproof enclosure. A flush-mounted switch in a damp or
wet location must be equipped with a weatherproof cover. - ANSLights in
contact with insulation should be IC-rated. If not, they should have 3 inches
of clearance away from insulation or any other combustible surface or
material.
According to InterNACHI's Home Inspection S.O.P., the inspector is not
required to: - ANS1. measure or determine the amperage or voltage of the
main service equipment;
2. remove panelboard cabinet covers or dead fronts;
3. insert any tool, probe or device into the main panelboard, sub-panels,
distribution panelboards, or electrical fixtures; or
4. operate any electrical disconnect or over-current protection devices.
According to the 2008 NEC, crawlspaces and unfinished basements that
have NM cable installed shall be drilled through the joists unless installed
on a running board. Cables with three 8-awg or two 6-awg and larger shall
be allowed on the surface of the joists. - ANSAlthough exposed conductors
are allowed to run in attics, there are some safety concerns that the home
inspector needs to be aware of, especially as the homeowner is going to
enter the attic space to store seasonal goods.
All conductors should be protected within 6 feet of the scuttle opening. This
means that no cables should be run on top of joists in this area. If they run
perpendicular to the joist, they should either be drilled through the timbers
2025 Edition. Real Questions with
Correct Answers. Graded A+
100-amp
4 AWG
2 AWG AL
SE cable - ANS150-amp
1 AWG
2/0 AWG AL
SE cable
15-amp: #14/2 with ground NM
-
Lighting circuits and typical general-use receptacles in living area.
Dishwasher. Disposal. Refrigerator/freezer. - ANS20-amp: #12/2 with
ground NM
-
Receptacle and switches in kitchen, laundry, bathrooms, and dining rooms.
Microwave, Dishwasher. Disposal. Refrigerator/freezer. Hydro massage
tub.
200-amp
2/0 AWG
4/0 AWG AL
SE cable - ANS
,240-volt appliances are fed from two 120-volt conductors, each connected
to a separate bus bar in the distribution panel. It is imperative that, when
one of the circuits trips due to an over-current condition, both conductors
are de-energized at the same time. For this reason, all breakers supplying
240 volts are required to have the handles tied together by a listed handle
tie. - ANS
3-phase supplies have three hot (or ungrounded) conductors, and there
may also be a neutral or grounded conductor. Each of these phases, or
legs, carries 120 volts at a different phase from the others. How and from
where power is taken in these phased supplies produces different types of
supply current. The common services include 120, 240, 208 and 480 volts.
- ANS
3-Wire Appliances, prior to the adoption of the 1996 NEC code revisions, 3-
wire, 240V supplies were common. The cable assembly carries:
1. two 120-volt ungrounded (hot) conductors; and
2. one grounded (neutral) conductor.
As there is no separate grounding means in this installation, the metal
frame of the appliance was allowed to be bonded to the neutral. This is no
longer allowed in new construction. - ANS4-Wire Appliances, since
adoption of the 1996 NEC, all 240V circuits are required to be 4-conductor
assemblies carrying:
1. two 120V ungrounded (hot) conductors;
2. one grounded (neutral) conductor; and
3. one equipment grounding conductor.
,30-amp: #10/3 with ground NM
-
Water heater. Clothes dryer. Condensing unit. - ANS40-amp: #8/3 with
ground NM
6/6/6/6 AL SER
Oven. Cooktop. Range.
50-amp: #6/3 with ground NM
4/4/4/6 AL SER
Oven. Cooktop. Range. - ANS100-amp: 3 AWG
1 AWG AL
remote distribution panel
A 240-volt circuit breaker also acts as the main disconnecting means in
modern panels, disconnecting all the electrical power in the home. - ANS
a GFCI breaker, or a correctly wired GFCI receptacle, can protect all
outlets farther downstream. - ANSThere are four basic types of GFCI in
common usage, and two or three of them are common in residential
construction. They are:
1. GFCI breakers in the distribution panel;
2. GFCI receptacles at in-home locations;
3. stand-alone GFCIs, as sometimes used with pools; and
4. extension cords with built-in protection, primarily found on construction
sites.
, A switch must not be installed within a wet location in a tub or shower
space, unless it is installed as part of a listed tub or shower assembly.A
surface-mounted switch located in a damp or wet location must be
enclosed in a weatherproof enclosure. A flush-mounted switch in a damp or
wet location must be equipped with a weatherproof cover. - ANSLights in
contact with insulation should be IC-rated. If not, they should have 3 inches
of clearance away from insulation or any other combustible surface or
material.
According to InterNACHI's Home Inspection S.O.P., the inspector is not
required to: - ANS1. measure or determine the amperage or voltage of the
main service equipment;
2. remove panelboard cabinet covers or dead fronts;
3. insert any tool, probe or device into the main panelboard, sub-panels,
distribution panelboards, or electrical fixtures; or
4. operate any electrical disconnect or over-current protection devices.
According to the 2008 NEC, crawlspaces and unfinished basements that
have NM cable installed shall be drilled through the joists unless installed
on a running board. Cables with three 8-awg or two 6-awg and larger shall
be allowed on the surface of the joists. - ANSAlthough exposed conductors
are allowed to run in attics, there are some safety concerns that the home
inspector needs to be aware of, especially as the homeowner is going to
enter the attic space to store seasonal goods.
All conductors should be protected within 6 feet of the scuttle opening. This
means that no cables should be run on top of joists in this area. If they run
perpendicular to the joist, they should either be drilled through the timbers
