Ping Larry (yet again)
Hi Larry,
I need some advice on 12 volt circuit breakers. I am redesigning my switchboard as the one I had made when I launched Herodotus 15 years ago is getting too small to add the extra switches and fuses I want. There is nothing worse than having to replace a fuse and not knowing where, even though you wired it yourself. Question: I am of the understanding that one should have a breaker that is at least double the proposed load in the combined circuits that it protects. E.g port cabin lights. Is this correct or is there a rule of thumb that applies? regards Peter |
Ping Larry (yet again)
On 2008-05-28 07:48:18 -0400, Herodotus said:
Question: I am of the understanding that one should have a breaker that is at least double the proposed load in the combined circuits that it protects. E.g port cabin lights. Is this correct or is there a rule of thumb that applies? My guideline is to protect the wiring so size for somewhat less than that (approximate) length of wire (both legs) with that gauge for a 2% or so drop in voltage. That's pretty conservative. ABYC allows 10%. -- Jere Lull Xan-à-Deux -- Tanzer 28 #4 out of Tolchester, MD Xan's pages: http://web.mac.com/jerelull/iWeb/Xan/ Our BVI trips & tips: http://homepage.mac.com/jerelull/BVI/ |
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