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Main Breaker(s) diode?

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Re: Main Breaker(s) diode?

Postby bud37 » September 23rd, 2021, 8:19 am

I have been thinking about this situation you have there. Something about it bothers me as to the way power was switching sides........doesn't seem right. Maybe have a marine certified electrician have a look at those connections there.
You should have galvanic isolators for each circuit to handle the ground side.....are they still there ? Does it look like someone has been in there before you ?
The above is strictly my opinion always based on years of doing...remember to support local business , it pays back.

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Re: Main Breaker(s) diode?

Postby tonyiiiafl » September 23rd, 2021, 12:21 pm

It looks truly original with all the wire ties (yellowed with age) intact. Looks truly original
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Re: Main Breaker(s) diode?

Postby bud37 » September 23rd, 2021, 12:54 pm

Tony there are two reasons actually......one was the power issue and the other, in the pic it looks like and tell me if I am wrong that there is a green wire connecting to the neutral bus.

That particular thing is concerning in my mind, if it were me I would have it checked further to find out why.

Do you still have the original galvanic isolators connected ?
The above is strictly my opinion always based on years of doing...remember to support local business , it pays back.
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Re: Main Breaker(s) diode?

Postby tonyiiiafl » September 23rd, 2021, 1:45 pm

I have the original galvanic isolators. I am going to take a closer look at that green wire. I truthfully am not sure.
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Re: Main Breaker(s) diode?

Postby JohnS » September 23rd, 2021, 8:58 pm

I dont think that is a diode, i have them on my 350 mariner and took it off to read the numbers. I think it's a thermal fuse between the breakers. I was checking mine because my ac ammeters aren't working and i thought that was the diode.
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Re: Main Breaker(s) diode?

Postby tonyiiiafl » September 23rd, 2021, 9:15 pm

Ahhh. Perhaps that is correct.

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Re: Main Breaker(s) diode?

Postby Viper » September 24th, 2021, 6:41 am

Would be interesting to know for sure. As mentioned, look at the numbers and do a Google search.
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Re: Main Breaker(s) diode?

Postby JohnS » September 24th, 2021, 5:11 pm

it's a surge arrester like this one:
https://www.tme.com/ca/en/details/cg-75 ... use/cg75l/

I forgot the exact number but it's on the arrestor.
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Re: Main Breaker(s) diode?

Postby tonyiiiafl » September 24th, 2021, 6:54 pm

*I am going into the panel tomorrow. I replaced the outside 30A AC breaker, and now all is working again. I am also going to get the measurements for the AC LED polarity light bulbs.

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