Journeyman Electrician’s Exam Journeyman Electrician's Branch Circuits 3

Question 1

When sizing a branch circuit conductor for a continuous load, the conductor must be sized for at least:

Accepted Answer

125% of the continuous load plus 100% of non-continuous load

Answer

NEC 210.19(A)(1) requires conductors to be sized for 125% of the continuous load plus 100% of non-continuous load.

Question 2

Which of the following loads qualifies as a 'continuous load' per the NEC?

Accepted Answer

A load energized for 3 or more hours

Answer

NEC Article 100 defines a continuous load as one expected to continue for three or more hours.

Question 3

A branch circuit that supplies two or more outlets or receptacles is classified as:

Accepted Answer

A general-purpose branch circuit

Answer

NEC Article 100 defines a general-purpose branch circuit as one that supplies two or more receptacles or outlets for lighting and appliances.

Question 4

A 240-volt branch circuit to a central air conditioner rated 28 amperes must be protected by an overcurrent device rated no more than:

Accepted Answer

30 amperes

Answer

For motor-compressor loads, the branch circuit overcurrent protection must not exceed the rating specified on the equipment nameplate, typically the next standard size above 28A is 30A.

Question 5

What is the maximum voltage between conductors permitted for branch circuits supplying receptacles in dwelling units?

Accepted Answer

150 volts

Answer

NEC 210.6(A) limits branch circuit voltage to 150 volts to ground for dwelling unit receptacles used for general lighting and appliances.

Journeyman Electrician’s Exam Practice Test

Journeyman Electrician’s Exam Practice Test

Journeyman Electrician’s Exam Journeyman Electrician's Branch Circuits 3