Overcurrent protection shall not exceed _____ unless otherwise permitted in the code.

What is the ampacity of a No. 3-AWG XHHW in a wet location at 30 degrees C? There are not more than three conductors in the conduit.

The total rating of utilization equipment fastened in place, shall not exceed _____ percent of the branch-circuit ampere rating where lighting units and cord-and-plug-connected utilization equipment are supplied.

The maximum rating or setting of an inverse time breaker used as the motor branch-circuit short-circuit and ground-fault protective device for a single-phase motor is _____ percent of the full-load current given in Table 430.248.

If the secondary voltage of a delta/delta transformer is 120/240V, the high-leg voltage-to-ground (or neutral) is approximately _____.

The minimum branch-circuit protection for a 115-gallon, 6 kVA, fixed storage-type water heater would be ______ amperes on 240-volt, single-phase.

A single-phase transformer has a 240 V primary and a 60 V secondary. With a 5 ohm load connected, what is the primary current?

A delta-connected three-phase alternator is driving a wye-connected resistive load. The alternator output voltage is 240 V. The load resistors are 12 ohms each. What is the phase current in the alternator?

What size THHN conductors are required for a load of 50 amperes? The conductors are in a conduit with a total of 9 conductors.

In an ac system, the size of the grounding electrode conductor to a concrete-encased electrode isn’t required to be larger than a(n) _____ copper conductor.