Glossary
Term used
Definition/Meaning
@
At.
/
And/or.
+/-
Plus or Minus.
≤
Equal to or less than.
#
Number.
°C
Degree Celsius.
°F
Degree Fahrenheit.
Ø
Phase angle.
Ω
Ohm; unit of resistance.
®
Trade Mark.
2nd
Second.
AC or ac
Alternating current, also implies root-mean-square (rms).
Ambient Temp.
Temperature of surrounding air.
Ambient noise
Acoustical noise of surrounding environment.
ANSI
American National Standard Institute.
AWG
American Wire Gauge.
Breaker
Electrical circuit interrupter.
BTU or Btu
British thermal unit. Defined as the amount of heat required to raise the tempera-
ture of one pound of water by 1°F.
Carrier
The company or individual responsible for delivering goods from one location to another.
C
Common.
CB
Circuit breaker.
cm
Centimeter.
Conduit
A flexible or rigid tube enclosing electrical conductors.
C.S.S.
Customer Support Service.
Current rating
The maximum current that a conductor or equipment can carry reliably without damage.
dBA
Decibel Adjusted.
Glossary
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