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ContinuousWave: Small Boat Electrical
Identify Black Box and Need For It
|Author||Topic: Identify Black Box and Need For It|
posted 06-15-2009 03:40 PM ET (US)
What is the black box in [Andrew's] set up that says, "DC Main" and "Bilge" [as seen in a collection of Andrew's photograph]? This doesn't figure into my 1984 Outrage 22. I've got a bilge pump switch on the center console. Am wondering: is this [black box] something I'll need in the re-wire that I'm doing?
posted 06-15-2009 08:39 PM ET (US)
Are you asking about the black box shown in this photograph:
It appears to me to be a plastic housing which contains two circuit breakers. The wiring of these circuit breakers is detailed in the electrical diagrams for the Boston Whaler boats which have them. My understanding is that the circuit breaker marked "MAIN" is in the circuit feeding the battery distribution from the primary battery distribution to the secondary battery distribution panel. The circuit breaker marked "BILGE" is in a circuit which is connected directly to the battery in order that it remain alive even when the primary battery distribution switch is set to OFF. This allows the bilge pump circuit to remain energized while the rest of the boat's electrical system is OFF.
posted 06-15-2009 08:43 PM ET (US)
The black box serves as a nice cover to conceal the wiring beneath it. Because the wiring to the BILGE circuit breaker is directly from the battery, one has to be very careful to prevent any short circuit risk.
posted 06-15-2009 08:44 PM ET (US)
Excellent - that's it Jim. Thanks.
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