article 480.6 is "overcurrent protection for "Prime movers"
what is the definition of a "Prime mover"
article 480.6 is "overcurrent protection for "Prime movers"
what is the definition of a "Prime mover"
I believe it is any equipment that converts energy from another source
They say I shot a man named Gray and took his wife to Italy
She inherited a million bucks and when she died it came to me
I can't help it if I'm lucky
In hybrid vehicles (including Diesel-electric locomotives), "prime mover" refers to the infernal-combustion engine, but the NEC doesn't apply to vehicles.
It sounds like 480.6 refers to batteries whose only purpose is starting infernal-combustion engines and are not tied into a building's electrical system.
Yep, "prime mover" refers to the engine/turbine turning an alternator/generator, or "the first thing that turns" in the system.
Maybe I'm missing something but I don't see the words prime mover anywhere in 480.6.
Ron
Ron, I have pasted the 2017 NEC 480.6.
This was 480.5 in the 2014 NEC.480.6 Overcurrent Protection for Prime Movers. Overcurrent
protection shall not be required for conductors from a battery
with a voltage of 60 volts dc or less if the battery provides power
for starting, ignition, or control of prime movers. Section 300.3
shall not apply to these conductors.
Chris
Agree.
NFPA 37: Standard for the Installation and Use of Stationary Combustion Engines and Gas Turbines
3.3.3 Engines. Prime movers such as internal combustion engines, external combustion engines, gas turbine engines, rotary engines, and free piston engines using either gaseous fuels or liquid fuels or combinations thereof.
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