A few comments:
I agree with daddle, 125 amps is a lot. I have a smaller Balmar alternator
, I think it's 85 amps and if it is running "full bore" it sure drags my little Yanmar
3cyl down. I'll bet I go from about 30 HP down to 25 and I can tell on the engine
I understand the AYBC issues and the fact that it's a mostly volunteer organization and they can't really afford to just give away the standards. At the same time if the insurance
companies are going to disallow claims if you don't meet all AYBC standards then they ought to underwrite at least the cost of online access to AYBC standards. It's kind of like saying "You gotta follow the rules but we ain't gonna tell you what they are!!" I don't know if they really disallow claims for not following AYBC but that's the general urban legend. I am pretty sure you'd better follow COLREGS and even that may not be enough.
I went through my files and I have pdf copies of AYBC T-5 (Safety Signs and Labels, dated 7/02), E-2 (Cathodic Protection, dated 7/01), and E-11 (AC and DC Electrical
Systems on Boats, dated 7/03). These may be out of date and I'd be interested if any AYBC member
could let me know. But, they are a start!! I'm not sure where I got these. Probably by tracking down some bunch of links through Google
and even this forum. I guess if they are copyrighted, I'd not want to post them anywhere.
I was able to read the National Fire Protection Association building codes for residential wiring
after a lot of shenanigans and a free "membership" in the NFPA. But they have them on their website in a fashion that can't be copied (easily by a non-hacker) and can't be conveniently searched. So, they are a real drag for extracting a small piece of information out of hundreds of pages.
If anyone can confirm that there is a less expensive "membership" in AYBC that will get access to the standards, I'd sure be interested. I'm not a boat professional and $250 seems a little high for my uses. Calder's books
and a few others give lots of good information and sometimes may exceed the standards. Also, in AYBC E-11 they state that the US Coast Guard has set mandatory standards for the US in CFR 183. But if you've never tried to read the CFR you'd better get ready for some tough going.
Speaking of which there is an article By Nigel Calder in one of the most recent "Sail" magazines that has a very interesting two page article about charging
systems. His main point is that running your engine
just to charge the batteries is VERY inefficient.