Blog

A(n) ___ system is required to guard against single-phasing or internal faults in 3-phase, 4-wire systems.

For autotransformers, when the current is less than ___ A, an overcurrent protective device is allowed to be rated at not more than 167% of the input current.

A major advantage of buck-boost transformers is their ___.

An autotransformer can be used to provide a slight boost or a slight buck to the line voltage to correct for small overvoltage or undervoltage conditions.

Starting autotransformers are usually connected in a(n) ___ or wye configuration.

A buck-boost transformer can be wired with a(n) ___ secondary to provide intermediate voltages for some of the loads.

Transformers connected in a(n) ___ configuration require that the taps be changed on three coils.

Transformers normally contain two independent circuits, the primary and the secondary.

There is a significant ___ drop as the current flows through a long line to the loads.

The reduced voltage in a control transformer provides a much safer environment for technicians working on the equipment.