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Ballast |
An auxiliary electrical device for fluorescent
and other discharge light sources.
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Battery |
A device for turning chemical energy into
electrical energy.
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Bonding (Bonded) |
The permanent joining of metallic parts to form an electrically conductive path that ensures electrical continuity and the capacity to conduct safely any current likely to be imposed.
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Bonding
Bushing |
A
conduit bushing that has conductor terminal use to bond the
conduit.
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Bonding Jumper |
A reliable conductor to ensure the required electrical conductivity between metal parts required to be electrically connected.
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Booster |
A
generator inserted in series in a circuit to add or subtract
from the circuit voltage.
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Branch Circuit |
The circuit conductors between the final overcurrent device protecting the circuit and the
outlet(s).
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Breaker
Tie |
A
metal device used to connect one or more circuit breaker handles
so that they switch at the same time.
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BTU |
British Thermal Unit. Energy required to raise
one pound of water one degree Fahrenheit. One pound of water at
32 degrees F requires the transfer of 144 BTUs to freeze into
solid ice.
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Buck-Boost Transformer |
A small, low voltage transformer placed in
series with the power line to increase or reduce steady state
voltage.
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Building |
A structure that stands alone or that is cut off from adjoining structures by fire walls with all openings therein protected by approved fire doors.
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Busbar |
A heavy rigid conductor used for high voltage
feeders.
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BX |
A nickname for armored cable.
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