AC Fuse holder

Croix du Sud · Jul 6, 2022

Hi All
My 1988 GB36 has two 50A fuse holders next to AC inlets (bows &stern). One must be replaced. I trust these are FIC 5900-11 fuse holders but it looks like an extinct specie.
Any source at reasonable price identified ? Found Wardsmarine.com on the net but no mean to purchase from them.
Anyway, are these AC inlets fuses really necessary ?
Greetings from the Mediterranean
Jean

SteveK · Jul 6, 2022

Distance from the panel requires a separate main breaker/fuse. By memory 10 feet or more, but don't quote me.
Also are you using a 50 AMP power supply cable and dock breaker? If only 30 amp then these fuses need to be 30A.

Comodave · Jul 6, 2022

Per ABYC you need to have over current protection within 10’ from the inlet on the boat. 10’ measured along the wiring.

Endeavor GB 32 · Jul 6, 2022

I replaced the fuse holder/covers that you are referring to years ago on a GB, and I did source the parts from Wards Marine. Good luck!
Scott

Croix du Sud · Jul 7, 2022

Thanks all
Actually the breaker are 10´´ off AC inlet, not 10’. Original installation was 50 Amp and I retain it even if oversized regarding normal use.
Best regards

Each finger a marlinspike · Jul 7, 2022

If you want to update to the current ABYC recommendations then replace with an ELCI breaker instead of fuses. Like a GFCI, it will interrupt the circuit if there is an imbalance in the hot & neutral lines which indicate current flowing through the grounding wire.
https://www.bluesea.com/products/3104/C-Series_ELCI_Main_Circuit_Breaker_-_120_240V_AC_50A

AC Fuse holder

Croix du Sud

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SteveK

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Comodave

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Endeavor GB 32

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Croix du Sud

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Each finger a marlinspike

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