List;
Since this subject has come up a couple times recently, I looked up some
recommended circuit breaker (CB) info in "Aircraft & Missile Design &
Maintenance Handbook" by Charles Overbey.
The criterion for selecting a CB is to open the circuit before the wire
begins to emit smoke. Here are those recommendations:
Copper Wire Size Circuit Breaker (amps)
#22 & #20 5
#18 10
#16 15
#14 20
#12 25 or 30
#10 35 or 40
#8 50
#6 80
#4 100
#2 125
Bear in mind that wire temperature will be higher if it is enclosed or
bundled into a cable. These ratings are only for CB protection of the wiring
itself, not how big a wire you should use for a particular load current.
I hope this may be helpful.
Regards, Neil Tucson, AZ
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