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A(n) ___ is a device used to shunt a voltage spike to ground or from line to line.

Guarding can be accomplished by ___.

___ transformers contain no oil and are cooled by circulating air.

Transformers have a noise rating based on the ___ rating.

If the rated primary current of the transformer is less than ___ A, the rating of the OCPD is permitted to be set at not more than 167% of the rated primary current.

A metal oxygen variable (MOV) is a nonlinear resistor that can change resistance with changes in current.

A(n) ___ test between the primary winding and secondary winding can be run to verify that all the windings are wired and operating correctly.

Insulation resistance tests should be conducted at a temperature of ___°F.

Because ___ contain polychlorinated biphenyls, a class of poisonous chemical, they have been banned by the EPA.

The type of electrical system determines the type of transformer required.