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Old 07-06-2022, 06:48 AM   #1
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AC Fuse holder

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
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Old 07-06-2022, 05:18 PM   #2
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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.
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Old 07-06-2022, 05:48 PM   #3
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Per ABYC you need to have over current protection within 10í from the inlet on the boat. 10í measured along the wiring.
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Old 07-06-2022, 06:45 PM   #4
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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
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Old 07-07-2022, 03:31 AM   #5
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Thanks all
Actually the breaker are 10īī off AC inlet, not 10í. Original installation was 50 Amp and I retain it even if oversized regarding normal use.
Best regards
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Old 07-07-2022, 08:35 AM   #6
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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/310...20_240V_AC_50A
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