Stevejohns
Joined: 25 Nov 2014
Posts: 1
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 Posted: Sun Jan 04, 2015 7:24 pm Post subject: Question about the Z-19 Electrical Schematic |
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Hi Bob,
I have mostly completed wiring up my Titan T-51 Mustang using your
schematic Z-19. "Dual Battery, Single Alternator, Electronically
Controlled Fuel Injection Engine".
I have a question regarding the fuses leading from the Main and the
Engine Battery buses to the Diode bridge for the fuel pumps.
My pumps require a 20A Circuit Protection. If I place a 20A Circuit
Breaker on both of the buses as shown in the drawings, I have 20A
protection if I am using only one battery path.
In normal operation however, I will have the dual pathway activated and
as far as I can tell this means that the fuel pump would need to pull
over 40A before the circuit breakers would trip?
If I address this situation by using two 10A Circuit breakers and then
one of the batteries drops out, I would have a situation where the pump
could trip the circuit breaker at 10A which is well before the specified
limit.
I expect that I am just reading the schematic wrong or my DC theory is
off. Can you help me out please?
Steve
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