Master Electrician Practice Exam (2020 NEC)

In a dwelling unit kitchen, a receptacle outlet must be installed at each wall counter space that is at least how wide?

What is the minimum cover depth required for a direct-buried residential branch circuit rated 120V or less, protected by a maximum 20A GFCI circuit breaker?

Arc-Fault Circuit Interrupter (AFCI) protection is required for all 120-volt, single-phase, 10-, 15-, and 20-ampere branch circuits supplying outlets or devices in dwelling unit:

Conductors supplying a single motor used in a continuous duty application shall have an ampacity of not less than what percentage of the motor's full-load current rating?

For one- and two-family dwellings, what is the maximum permitted DC voltage for a solar photovoltaic (PV) system?

In commercial repair garages, all 125-volt, single-phase, 15- and 20-ampere receptacles installed in areas where electrical diagnostic equipment or electrical hand tools are to be used must be:

When sizing a feeder for a continuous load, the feeder conductors and overcurrent protection must be sized at no less than what percentage of the continuous load?

When three or more conductors are installed in a conduit or tubing, the maximum allowable fill capacity is:

To provide reasonable efficiency of operation, that the maximum total voltage drop on both feeders and branch circuits to the farthest outlet should not exceed:

According to the NEC, a continuous load is a load where the maximum current is expected to continue for a minimum of how many hours?

Which of the following is NOT a standard ampere rating for fuses and inverse time circuit breakers?

Electrical Metallic Tubing (EMT) must be securely fastened in place within what distance of each outlet box, junction box, or cabinet?

Which of the following is an unacceptable use for flexible cords and cables?

What is the minimum size permitted for overhead copper service-drop conductors?

When calculating the neutral feeder load, what is the maximum demand factor allowed for the portion of the unbalanced load in excess of 200 amperes?

What is the maximum number of quarter bends (90-degree bends) allowed in a single run of Electrical Metallic Tubing (EMT) between pull points?

If a circuit is protected by a 60-ampere overcurrent device, what is the minimum size copper equipment grounding conductor (EGC) required?

What is the required free space volume allowance for each 12 AWG conductor in a junction box?

What is the minimum required working space depth in front of a 480-volt panelboard if there are exposed live parts on one side and grounded parts on the other side (Condition 2)?

In a dwelling unit living room, receptacles must be installed so that no point measured horizontally along the floor line in any wall space is more than how far from a receptacle outlet?