nuckolls.bob(at)aeroelect
Guest
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 Posted: Tue Mar 01, 2022 8:05 am Post subject: WAS: Sizing a B-lead ANL now "master fuse" on the battery |
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At 12:02 AM 3/1/2022, you wrote:
| Quote: | Sort of related query.
A J3 Cub is being converted to accommodate an 0-200 engine with electric start. Â
The battery box is behind the baggage compartment, and for the sake of simplicity, there is no master solenoid back there, so there is a hot #4 wire all the way top the firewall.Â
The only electrical load is the radio and intercom, for which there is a switch and circuit breaker.
I want to add a fuse of some kind at the battery box to prevent a "shower of sparks" welding event if there is an incident which causes the steel bits to cut into the hot battery cable.Â
What is the likely current draw on a typical lightweight starter for an 0-200, and what is the suggested "fuse " mechanism? |
Does this airplane have an alterantor?
Are their any concerns for dealing with a
'stuck' starter contactor?
Have you crafted a power distribution
diagram that offers the total picture
of your proposed system?
What's the down-side of having a legacy
battery contactor at the battery location
with a switched fat-wire going to a starter
contactor on firewall and a fuse-block
to offer protected feeders to appliances?
The only circuit protection needed are
fuses in the fuse block and perhaps
a fusible link if you're going to carry
some engine driven power source.
What size/style battery is being
considered?
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
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