nuckolls.bob(at)aeroelect
Guest
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 Posted: Sat Aug 06, 2011 7:48 am Post subject: Questions about protecting the 4AWG wire in a remote ba |
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| Quote: | Bob,
Seems like your solution is to put the battery contactor near the
battery, and the starter contactor on the firewall with the bus feeder
and alternator wired to that.
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Yes . . .
| Quote: | That is what I'll do, but doesn't that leave the 4awg wire between the
two contactors unprotected or will the battery contactor fail before the
wire does? Are you saying that this wire doesn't need to be protected
because it can be switched off by the pilot?
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Exactly. These 'fat wires' are part of the power
distribution between major components and do not
represent an operational hazard for overload. The
artfully installed fat wire will not suffer a hard
fault that puts the wire at risk . . . it generally
is 'self clearing' and burns away the edge of any
former where the grommet has failed.
In a type certificated airplane, FAR23.1357
allows fat-wires to go 'un protected'. See:
http://www.aeroelectric.com/Reference_Docs/FAA/Part23_electrical_A.pdf
Bob . . .
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< Go ahead, make my day . . . >
< show me where I'm wrong. >
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