GLOSSARY OF COMMON
ELECTRICAL TERMS
   
 
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- The terms clarified under this category are used by the electrical trade and are not normally found in the CEC or NEC.

Across-The-Line - Used to describe a full voltage motor controller.

Alu-Sheath - Used to identify an aluminum sheathed cable.

Antishort - The insulated bushing required when armoured cable is terminated.

Appliance - Portable units or groups of units assembled so as to form a complete unit.

Box Connector - Sometimes called a 300 V, 1010, 1030, or L16 connector.

Burndy Connector - A term or trademark used to identify a split bolt type connector for splicing conductors.

Busduct - Used to identify a busway.

BX - Used to identify armoured cable.

Cab Tire - Used to identify flexible cords with letter designation, beginning with the letter "S". Cab tire usually has a condition of use of "hard usage" or "extra-hard usage".

Chico - Used to identify the sealing compound used in explosion-proof seals.

Code Fuse - Used to identify a standard certified fuse.

Condulet - Used to identify fittings used with metal conduit such as LB'S, LL'S, LR'S, E, etc.

Coreflex - Used to identify aluminum sheathed cable.

Device Box - Used to identify a box that holds a device (eg, switch, receptacle, or cover) by means of 6/32 machine screws.

  • #1100 is a 3 x 2 x 1 1/2 in device box
  • #1102 is a 3 x 2 x 2 in device box
  • #1104 is a 3 x 2 x 2 1/2 in device box
  • #1004 is a 3 x 2 x 3 in device box

Electro-Strip - A trademark used to identify a multi-outlet assembly.

Enclosure - Used to identify a mechanical, electrical, and environmental protection for a control device, etc.

EYS - Used to identify an explosion-proof seal.

Fixture - Used to identify a permanently connected unit or group of units assembled so as to form a complete unit that can be removed or replaced without damaging any part of the building structure (eg, luminaire, electric baseboard heater).

Grounded Conductor - Used to describe any conductor that is bonded to ground; often confused with neutral.

Harmonics - Used to describe electrical energy that is at a frequency other than 60 Hz, usually caused by unbalanced user loads.

Heater - Used to identify a thermal overload device.

Hickey - Used to identify; (a) a manual bending device used to bend rigid metal conduit; or (b) a coupling used to connect a luminaire to its supporting device.

Neutral - Used to identify a conductor that is always bonded to ground and intended to carry the unbalanced load; a grounded conductor is not always a neutral conductor.

> - By definition, a neutral conductor of a circuit requires at least three conductors in that circuit. However, in the trade, the term "neutral conductor" is commonly applied to that conductor of a 2-wire circuit that is connected to a conductor grounded at the supply end. Care should therefore be used in the use of this term when applying Electrical Code.

Nipple - Used to identify a short section of conduit used between fittings, between fittings and enclosures, and between enclosures.

Nolox - A trademark term used to identify the joint compound used to prevent the oxide film from forming or reforming on the termination or splice of stranded aluminum conductors.

Outlet Box - Used to identify a box that uses 8/32 machine screws for attachment of fixtures (eg, light fixtures, ceiling fans, covers, plaster rings, extension rings).

  • pancake 1/2 in deep round box
  • octagonal 4 x 4 x 1 1/2 in deep
  • square 4 x 4 x 1 1/2 in deep
  • square 4 11/16 x 4 11/16 x 2 1/8 in deep

Panel - Used in place of panelboard.

Pot Light - Used to identify a recessed incandescent light fixture.

Pyro - A trademark term used to identify mineral-insulated cable.

Quadraplex - Used to identify neutral supported cable that has three insulated conductors.

Romex - Used to identify nonmetallic sheathed cable.

Rosette - Used to identify a device that is used for supporting and connecting to the circuit the cord and sockets of flexible drop cords.

Running Board - Used to identify a piece of material at least 19mm thick used to protect conductors or cables from mechanical injury (eg, in attic spaces).

Running Thread - Used to identify when the length of external thread on a rigid conduit exceeds the maximum length stated by Code.

Seal-Tight Flex - Used to identify liquid-tight flexible conduit.

Standard Fuse - Another term for code fuse.

Starter - Used to identify a motor controller.

Stud - Used to identify a conduit run between a luminaire and the fixture hickey (coupling) or the fixture hickey (coupling) and the outlet box supporting the luminaire.

System - Used within the context of electrical power distribution, a system is intended to mean an electrical installation in which the energy provided by that installation to utilization equipment is derived from a single energy source. For example, an electrical installation supplied from a transformer or bank of transformers can be considered a system; an installation supplied from a different transformer would be considered a different system.

Tap Conductor - Used to identify a conductor that has an ampacity rating less than the ampacity of the conductor or busbar feeding it.

Three-Wire Split Branch Circuit - Used to identify a multi-wire branch circuit.

Triplex - Used to describe a neutral supported cable that has two insulated conductors.

Wire Connector - Identified by several terms or trademarks such as marrette, marr, wire nut, and splice cap.

Wiremould - A trademark term that is also commonly used to identify a surface raceway.

 
 
Source: Canadian Electrical Code and National Electrical Code
 
 
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