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| Re: [GMCnet] Coach Batt Power Feed [message #264128 is a reply to message #264116] |
Mon, 13 October 2014 09:36   |
k2gkk
Messages: 4452
Registered: November 2009
Karma:
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Senior Member |
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Both of my boats (1986 28' Carver sedan then 1995 35' Carver aft cabin) had that style of master power switch, but the automatic bilge pump float switches were
wired HOT (through circuit breakers) to the batteries for safety.
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> Date: Mon, 13 Oct 2014 07:08:43 -0600
> To: gmclist@temp.gmcnet.org
> From: matt7323tze@gmail.com
> Subject: Re: [GMCnet] Coach Batt Power Feed
>
> Ken Burton wrote on Sun, 12 October 2014 22:43
>> If you have TWO house battery banks, (and one engine battery) why not just combine the house batteries with a combiner and be done with it.
>>
>> I guess I do not understand what it trying to be accomplished.
>
> Ken,
>
> Many insurance carriers were requiring a master battery disconnect.
> That was, until, they discovered that installed as required, it also disconnected any automatic bilge pump.
> (Fall back and punt.) So, they revised the rules to nobody's benefit.
>
> Also, at that time, most boats did not have a house and an engine battery.
> Some had two batteries, and to share the load these switches were installed.
> These people were slow to adopt diode isolators and combiners.
> As said, many of these switches were break-before-make and switching the wrong way with the engine running could take out your alternator's bridge
> fast.
>
> Actually, I thought all of this was kind of neat. It allowed me to make a reasonable living bringing cruising boat electrics up to the level that our
> coaches were in the 70's. But then, if you knew the technology level (more accurately, the lack thereof) of most pleasure boat builders, you would be
> astounded - even today....
>
> Matt
>
>
> --
> Matt & Mary Colie - Members GMCMI, GMCES
> '73 Glacier 23 - Still Loving the Applied Rear Brake Control Arms
> SE Michigan - Twixt A2 and Detroit
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