Residential Electrical Practice Exam 2017

A 200-ampere residential service is fed with 2/0 AWG copper ungrounded conductors. What is the minimum required size for the copper grounding electrode conductor (GEC) connected to a driven ground rod?

What is the minimum free length of conductor that must be left at each outlet, junction, and switch point for splices or the connection of luminaires or devices?

When checking the service equipment, you look for the Intersystem Bonding Termination (IBT) used to ground communication systems (like internet and cable). An IBT must have the capacity to connect at least how many intersystem bonding conductors?

A receptacle is installed near a bathtub. The code dictates a restricted zone where receptacles are not permitted. What are the dimensions of this zone from the top of the bathtub rim?

For a single-family dwelling, the code requires at least one accessible receptacle outlet at the front and back of the dwelling. What is the maximum permitted height for these required receptacles above grade level?

Nonmetallic-Sheathed Cable (Type NM) must be secured within what distance of a standard nonmetallic outlet box if the box does not contain integral cable clamps?

What is the minimum required rating for the service disconnecting means for a standard one-family dwelling?

How many 20-ampere small-appliance branch circuits are required, at a minimum, to serve the receptacle outlets in a dwelling unit kitchen, pantry, dining room, and similar areas?

For a residential branch circuit rated 120 volts or less, protected by a GFCI rated at 20 amperes or less, what is the minimum cover requirement for direct-buried Type UF cable?

At least one receptacle outlet must be installed in a dwelling unit hallway if the hallway, measured continuously along the floor line, is at least how long?

All 15- and 20-ampere, 125- and 250-volt nonlocking-type receptacles installed in a dwelling unit must have which of the following safety features?

In a dwelling unit, which of the following areas is NOT explicitly required by the NEC to have Arc-Fault Circuit Interrupter (AFCI) protection for all 120-volt, 10-, 15-, and 20-ampere branch circuits?

In a dwelling unit, at least one wall switch-controlled lighting outlet must be installed in every habitable room, bathroom, and:

A grounded (neutral) conductor of 6 AWG or smaller must be identified along its entire length by a continuous white or gray outer finish, or by:

What is the minimum required burial depth for Rigid Metal Conduit (RMC) passing under a residential driveway?

When inspecting a rough-in, you notice holes bored through wood framing members for Nonmetallic-Sheathed Cable (Type NM). The edge of the bored hole must be at least how far from the nearest edge of the wood member to avoid needing a steel nail plate?

What is the minimum required rating for a branch circuit that strictly supplies the receptacle outlets in a single dwelling unit bathroom?

If a ground rod is used as the sole grounding electrode, what is the maximum required resistance to ground before a supplemental electrode is required?

In a dwelling unit kitchen, no point along the wall line of a countertop space can be more than how far from a receptacle outlet?

When installing a surface-mounted incandescent luminaire in a clothes closet, what is the minimum required clearance between the luminaire and the nearest point of a storage space?