nuckolls.bob(at)cox.net
Guest
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 Posted: Tue Apr 22, 2008 4:39 am Post subject: To battery bus or not to battery bus, that IS the question. |
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At 01:17 AM 4/22/2008 -0400, you wrote:
| Quote: | Lee,
A slight correction. While I don't have a battery bus, I do have a fused
wire from the hot battery terminal that powers my dimmer-controlled
interior LED lights.
Stan Sutterfield
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Aha! Obviously it's not a "bus" (distribution to
two or more loads) but it's still an always-hot
feed directly from the battery. Even the lowly
C-140 I used to fly a lot had sort-of-a battery
bus. There were two fuseholders on a bracket
right at the battery contactor that powered the
electric clock and the Hobbs meter.
Clearly, not everyone will need this feature in
their project but it's one of those things
easily added at some later time to support an
upgrade of system features (like sticking an SD-8
on Z11 to make it Z13 an SD-20 to make it a Z12).
The caveats are simple suggestions to be mindful
of crash safety (e.g. limiting protection sizes) and
failure mode effects analysis (e.g. driving electrically
dependent engines directly from hot battery sources)
for the purpose of achieving design goals.
Bob . . .
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