I have a triple pole main circuit breaker for my S2. It is an Airpax Part No: UPG666-4094-1. I know it is designed to simultaneously break both hot and neutral legs on a 120VAC system and both live and neutral legs on a 220VAC system. Only 2 of the 3 poles work. Is this because it is designed to only work with 120VAC and only needs to simultaneously break both hot and neutral legs? Or am I missing something? Does the third pole have something to do with reverse polarity? Any suggestions or help is welcome.
Onboard AC Power Main Breaker
- Thread starter Styx
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Here's manufacturing literature for that series. I don't see where the third pole wouldn't be interlocked with the handle. I assume all three are common-trip, but I haven't read all of it carefully. But it sure seems that they're all operated simultaneously by the single handle, so it would seem that yours is broken.
http://airpax.sensata.com/pdfs/apg.pdf
http://airpax.sensata.com/pdfs/apg.pdf
here is a diagram of how the breaker is wired ...this should help you figuer it out....i cant seem to rotate it so you will have to copy it to your desk top and print it out...hope this helps
regards
woody
When I check it with my ohm meter, 2 of the poles allow current through and the 3rd does not. Should all 3 allow current through?
no ...as i under stand it the third pole acts like a latching device and keeps the other two form staying connected until you correct the reverse polarity problem...the third pole dose not carry or bridge power.....if i am incorrect maybe Maine Sail will correct this info for you
regards
woody
regards
woody
when i first came on this fourm is was messing with the main breaker checking out the good and bads ones and found the ground wire connected to the third leg on the breaker and in my infinet wisdom posted the comment that my ground was also breakered by the main breaker witch it is not by the way only hooked up to one side and i got a lot of input from folks on here that that should never happen lol and after getting the diagrham i can now see why the ground is never broken for any reason as it is your safety
regards
woody
regards
woody
Starting to understand. So on the diagram, the third leg is labled "To Safety Ground". What is "Safety Ground" and where does it come from? I am guessing it is different than the neg ground of the boat? Also, I assume it has nothing to do with the green grounding wire running from the bow or the stern connect to the vessel's metal strip on the hull.
thanks Stu ....i always dont articulate very well lol ...on the drawing it shows green or yellow ...
regards
woody
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