tkennedy
New Member
I have a 1987 Sea Ray 390.
Recently the marina switched out their AC breakers to a GFCI at the dock service panel.
I run (2) 30 amp shore power cords from the dock electrical pedestal behind my boat (dock service panel connects to pedestal behind boat which has (2) 30 amp breakers, then I plug shore power into pedestal which has (2) connections).
When I now turn on shore power at the boat’s service panel (inside cabin) it kicks the breaker off at the dock service panel (not at the pedestal). It doesn’t happen on any other boats at the marina. I even switched the shore power cords to a neighbor’s boat behind me with same result.
I had the dock master temporarily replace the old breaker in the dock service panel. When he did that NO breakers kicked off, BUT, I did discover a burned area on the ground bus bar behind the boat service panel (see photo).
I don’t know when this short may have occurred but it wasn’t there a couple of years ago (might have been when dock switched breakers).
KNOWN:
Shore power cords are in good shape!
Nothing plugged in on boat to AC outlets!
GFCI outlets (2) on boat checked and are not "thrown"
My questions:
1. What would cause the dock service panel to kick off – What should I check on the boat?
2. Could I remove the burned bus bar, clean it up and reinstall it and try again?
3. Are there any circuits I should check on the boat’s service panel with my multimeter? If so, how/what should I check?
4. Any other suggestions?
Thanks in advance!
Tom…
Recently the marina switched out their AC breakers to a GFCI at the dock service panel.
I run (2) 30 amp shore power cords from the dock electrical pedestal behind my boat (dock service panel connects to pedestal behind boat which has (2) 30 amp breakers, then I plug shore power into pedestal which has (2) connections).
When I now turn on shore power at the boat’s service panel (inside cabin) it kicks the breaker off at the dock service panel (not at the pedestal). It doesn’t happen on any other boats at the marina. I even switched the shore power cords to a neighbor’s boat behind me with same result.
I had the dock master temporarily replace the old breaker in the dock service panel. When he did that NO breakers kicked off, BUT, I did discover a burned area on the ground bus bar behind the boat service panel (see photo).
I don’t know when this short may have occurred but it wasn’t there a couple of years ago (might have been when dock switched breakers).
KNOWN:
Shore power cords are in good shape!
Nothing plugged in on boat to AC outlets!
GFCI outlets (2) on boat checked and are not "thrown"
My questions:
1. What would cause the dock service panel to kick off – What should I check on the boat?
2. Could I remove the burned bus bar, clean it up and reinstall it and try again?
3. Are there any circuits I should check on the boat’s service panel with my multimeter? If so, how/what should I check?
4. Any other suggestions?
Thanks in advance!
Tom…
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