electricalscho

A relay which switches in response to a specific number of applied impulses.

Negative Phase Sequence

Power supplied during designated periods of low power system demand.

Luminaire light distribution is classified as non-cutoff when there is no candlepower limitation in the zone above max candlepower.

In multiphase circuits, the conductor used to carry unbalanced current. In single-phase systems, the conductor used for a return current path.