Exciting Current

The magnetizing current of a device such as a transformer. Also known a field current.

Eutectic

An alloy used to form the melting point of a fuse. It is frequently silver or tin based.

EPROM

Electrically Programmable Read Only Memory.

EPR

Ethylene Propylene Rubber, a synthetic rubber compound that is used as cable insulation.

EPDM

Ethylene Propylene Dione Monomer. This is a synthetic rubber compound used as insulation in making electrical components.