Quiz: 2024 International Residential Code (IRC) Chapter 39 Power And Lighting Distribution

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1. Receptacle outlets that are part of a luminaire or appliance are generally considered to be:

Part of the required general purpose receptacle outlets.
In addition to the required general purpose receptacle outlets.
Permitted only if GFCI protected.
Prohibited in habitable rooms.

2. According to the IRC, which of the following is NOT considered a 'wall space' for the purpose of general purpose receptacle distribution?

A 3-foot (914 mm) section of wall around a corner.
The space occupied by a fixed cabinet that does not have a countertop.
A 2.5-foot (762 mm) wide section of wall along the floor line, unbroken by a doorway.
The space occupied by a fireplace.

3. Regarding small-appliance branch circuits in a dwelling unit, which of the following statements is true?

Receptacles installed in a kitchen to serve countertop surfaces must be supplied by exactly two small-appliance branch circuits.
A single small-appliance branch circuit can supply receptacle outlets in more than one kitchen.
Additional small-appliance branch circuits, beyond the minimum two, are not permitted for kitchen and dining areas.
Either or both of the minimum two small-appliance branch circuits for countertop receptacles can also supply other receptacle outlets in the same kitchen.

4. A kitchen wall countertop has a sink that creates a wall area directly behind it. This area is 20 inches wide. Is a receptacle outlet required in this 20-inch wide area directly behind the sink?

Yes, all countertop spaces 12 inches or wider require a receptacle.
No, receptacle outlets are not required on a wall directly behind a sink.
Yes, but it must be located more than 20 inches above the countertop.
No, because the area is less than 24 inches wide.

5. A dwelling unit has a back deck accessible from inside that is 2 inches (51 mm) horizontally from the dwelling unit wall. What is the maximum height above the deck surface for the required receptacle outlet?

5.5 feet (1676 mm).
6 feet (1829 mm).
6 feet 6 inches (1981 mm).
7 feet (2134 mm).

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