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Old 07-06-2018, 14:50   #16
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Join Date: Aug 2009
Location: San Diego
Boat: 1984 Passport 42 pilothouse cutter
Posts: 34
Re: Questions on shore power system

Using Bridgport Magnetics diagrams, I put together my own for the diffrent line voltages. Everything seems to check out ok, so it appears that I was messing myself up a bit (phases through a transformer).

It does appear that if I used 1 120v 30amp, and a 120v 50amp plug it would allow you to use all 80 amps, ~41amps 240v off the secondaries. I want 240v and dont nessesarily need this much power. however it will be usefull if I add A/C (likely) or run the big air compressor without blowing breakers on the dock. this may also help someone with a power hungry boat

waiting to hear from bridgeport magnetics for some further verifications. however this wiring diagram appears to work work for all the isolation transformers except for the victron 3.6KV auto isolation transformer. seems like a simple 4 pole ON-OFF-ON switch would work well.

Enclosed is a pdf of the diagram. I only had power point available when I was working on it, and had to split it into two files due to upload size.

V/R

Robert
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Attached Files
File Type: pdf SV Vederfolnir AC Power System1-Isolation transformer wiring.pdf (570.5 KB, 5 views)
File Type: pdf SV Vederfolnir AC Power System1-SP to AC Panel.pdf (523.5 KB, 7 views)
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