Residential Electrican Practice Exam #6

When a single branch circuit w/ an equipment grounding conductor is feeding a detached garage from a house, what if any, additional grounding electrode(s) is/are required at the garage?

• A ground rod and underground metal water pipe

• A metal underground water pipe only.

• A metal underground water pipe and building steel, if available.

• No additional electrodes are required.

The point of attachment of a service drop to a residence where the voltage is 120 volts to ground is required to be a LEAST_______ above grade.

• 8 feet

• 10 feet

• 12 feet

• 15 feet

The branch-circuit overcurrent protection device shall be permitted to serve as the disconnecting means for

• 2

• 1

• 1/2

• 1/8

When installing an overhead service using a rigid metal conduit mast for the support of the service drop conductors, the mast shall not be of adequate strength or be _______________.

• at least 2 inches in diameter

• a minimum of 3 inches in diameter

• supported by braces or guys

• less than 4 feet in length

When wall switches are installed in the same room wiwth a spa or hot tub, the MINIMUM distance from the switches to the inside wall of the hot tub or spa shall be _____________.

• 5 feet

• 10 feet

• 15 feet

• 18 feet

All 15 and 20 ampere, single-phase, 125 volt receptacle outlets locataed at LEAST ______ from the inside walls of a swimming pool shall be provided with GFCI protection.

• 10 ft

• 15 ft

• 20 ft

• 25 feet

A luminaire (lighting fixture) shall be supported independently of the outlet box when it weighs more than ____________ pounds, unless the outlet box islisted fo the weight to be supported.

• 6

• 25

• 35

• 50

Of the following listed connectors, which type is prohibited for connection of a grounding conductor to an enclosure?

• sheet metal screw

• pressure connector

• clamp

• lug

The ampacity of branch-circuit conductors and the rating or setting of overcurrent protective devices supplying fixed, outdoor, electric deicing equipment shall not be less than ___________ percent of the full load current of the equipment.

• 100

• 125

• 80

• 150

When an intermediate metal conduit (IMC) contains conductors of 600 volts or less and is buried under a gravel driveway of a single family dwelling, the IMC must be buried at LEAST _____________.

• 12 inches

• 18 inches

• 24 inches

• 30 inches