Electrician Exam 1

Ohm's Law is a relaationship between______.

The amapcity of a conductor is defined by the NEC to be the maximum current, in amperes, a conductor can carry under the conditions of use without exceeding _____.

A disconnect switch enclosure installed in a Class II, Division 2 location shall be ____.

The interior of enclosures or raceways installed underground shall be considered as a _____location.

Determine the MAXIMUM allowable current-carrying capacity of four (4) size 1/0 AWG THW copper current-carrying conducctors installed in a common raceway with an ambient temperature of 86 deg. F.

The NEC defines a continous load to be a load where the maximum current on the circuit is expected to continue for at LEAST ____ hours or more.

The service discconecting means for each service shall consist of NOT more than ____switches or circuit breakers.

You have determined a conductor has a computed allowable ampacity of 75 ampreres. What is the MAXIMUM standard ampere rating of the overcurrent protection device the NEC permits to protect this circuit where this is not a motor cirucit or part of a multioutlet branch circuit supplying more than one receptacle?

A 208-volt, 3-phase, 50 hp, squirrel-cage, continuous-duty, ac motor has a full-load running current rating of ____.

What is the MAXIMUM distance that a disconnect switch is permitted to be located from the operator's station for a portable carnival ride?

Determine the MINIMUM trade size electrical metallic tubing (EMT) required to enclose eight (8) size 6 AWG copper conductors with THHW insulation, when installed in a 50 foot conduit run.

Where exceptions are not applicable, when a feeder supplies a continous load of 240 amperes, the overcurrent protection device protecting this circuit shall have a rating of at LEAST ____.

Liquidtight flexible metal conduit (LFMC) shall be securely fastened WITHIN ___ of each box or other condiuit termination

Where a pull box to be installed will contain conductors of size 4 AWG and larger, and a straight pull of the conductors is to be made, the length of the box shall NOT be less than ____times the trade diameter of the largest conduit entering the box.