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GLOSSARY OF TERMS | E-H
  A-B | C-D | E-H | I-R | S-Z
Electromagnetic
Unwanted signals picked up and transmitted over electrical lines, caused by varying magnetic fields.
Eccentricity
Like concentricity, a measure of the center of a conductor's location with respect to the circular cross-section of the insulation. Expressed as a percentage of displacement of one circle within the other.
 Elongation
The fractional increase in length of a material stressed in tension.
Energy Capacity
The heat absorption capacity to absorb electrically generated heat, expressed in joules, or watt-seconds.
Filler
(1) A material used in multiconductor cables to occupy large interstices formed by the assembled conductors. (2) An inert substance added to a compound to improve properties or decrease cost.
Flame Resistance
The ability of a material not to propagate flame once the heat source is removed.
Flex Life
The measurement of the ability of a conductor or cable to withstand repeated bending.
Frequency
The number of times an alternating current repeats its cycle in one second. (See Hertz).
Gauge
A term used to denote the physical size of a wire.
Ground
An electrical term meaning to connect to the earth or other large conducting body to serve as an earth, thus making a complete electrical circuit.
 HPN
Parallel heater cord, typically neoprene-type insulation.
Harness
An arrangement of wires and cables, usually with many breakouts, which have been tied together or pulled into a rubber or plastic sheath, used to interconnect an electrical circuit.
Hertz (Hz)
A term replacing cycles per second as an indication of frequency.
 High Potential
A test designed to check the integrity of a conductor's insulation by applying a specified high voltage.
Hybrid Circuit
A surge suppressor that uses a combination of two or more types of electronic devious to provide additional or multi-stage surge protection (most surge protection use only MOVs).
Hz
Abbreviation for hertz.
 
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