[Land-speed] Wiring and Fuses

neil at dbelltech.com neil at dbelltech.com
Sun Oct 28 17:31:01 MST 2007


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


More information about the Land-speed mailing list