Glossary

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There are 23 names in this directory beginning with the letter H.
Halogen
Any of five elements: fluorine, chlorine, bromine, iodine and astatine. These elements may be combined with insulation compounds to enhance flame retardancy.

Hard-Drawn Wire
Wire that has not been annealed after drawing.

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 electric circuit.

Hazardous Location
A location where fire or explosion hazards may exist because of flammable gases, vapors, or liquids; combustible dust; or ignitable fibers or flyings.

HDPE
High density Polyethylene

Heat Distortion
Distortion of flow of a material or configuration due to the application of heat.

Heat Resistance
The ability of an insulation compound to resist degradation caused by high temperatures.

Heat Shock
Test to determine stability of a material by sudden exposure to a high temperature for a short period of time.

Helix
Spiral winding.

Henry
Unit of inductance such that the induced voltage in volts is numerically equal to the rate of change in current in amperes per second.

Hertz (Hz)
A term for replacing cycles-per-second as the unit of measure for frequency.

Heterogeneous Insulation
A cable insulating system composed of two or more layers of different insulating materials.

Hi-Pot
A test designed to determine the highest potential that can be applied to conductor without breaking through the insulation.

High Strength Alloy Conductor
A conductor which shows a maximum 20% increase in resistance and a minimum of a 70% increase in breaking strength over the equivalent construction in pure copper while exhibiting a minimum elongation of 5% in 10 inches

High Voltage
Generally considered to be a wire or cable with an operating voltage of over 600 volts.

High-Temperature Wire and Cable
Electrical wire and cables having thermal operating characteristics of 150°C and higher.

HMP
High Molecular weight Polyethylene

Hook-up Wire
A single insulated conductor used for low-current, low voltage (usually under 600 volts) applications within enclosed electronic equipment.

Hot Conductor
The underground phase conductors of an electrical system connected to the circuit breaker or fuse.

Hot Tin Dip
A process of passing bare wire through a bath of molten tin to provide a coating.

HV
High Voltage

Hybrid Cable
Multi-conductor cable containing two or more types of components.

Hydroscopic
A type of material that absorbs some water from the air around it.