Conductors for intermittent duty
Conductors for intermittent duty
(OP)
I need to select conductors for a small starter motor. 12 vdc, 125 amps, intermittent duty - same duty cycle as a car starter. Each conductor about 8 feet long. Flexibility and resistance to sunlight desirable. I know the conductors don't need to be rated for continuous duty, but I don't know how they should be sized for intermittent duty. I imagine two separate conductors or two side-by-side conductors, like in a jumper cable, would be better than a cable with an overall jacket, due to heat dissipation considerations. Any suggestions?





RE: Conductors for intermittent duty
Sounds like you should follow normal automotive standards.
RE: Conductors for intermittent duty
The voltage drop is defined by the motor's and
the battery's min. voltages.
A few simple experiments should help you to decide.
The only thing difficult to calculate is the heat
loss in air vs. wire diameter.
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