Practice test

Electrician Practice Exam 20

The final Master-tier electrician practice exam: full load calcs, large-service bonding, motor EGCs, GFPE, and impedance grounding. 25 timed questions.

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Question 1

1

A 4,000 sq ft dwelling has four fixed appliances totaling 6,600 VA (not range/dryer/HVAC). Per NEC 220.53, the fixed-appliance demand is:

Question 2

2

Continuing the dwelling: lighting demand 7,725 + fixed appliances 4,950 + range 8,000 + dryer 5,000 + heat 10,000 = net VA, and at 240 V the amps and minimum service are:

Question 3

3

A 3,000 A service has 8 sets of 500 kcmil copper/phase (4,000 kcmil). Per NEC 250.28(D)(2), the main bonding jumper at 12.5% of phase area must be at least:

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