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Fuse Block

Old 08-06-2004, 04:06 PM
  #1  
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Default Fuse Block

If my boat came with a fuse block that has a 30 amp fuce on the posetive lead near the battery, I can assume that the max TOTAL load of that fuse block is 30 amps correct.
for instance if I had bilge pump, bait pump, lights, washdown all going at the same time and they were all 10 amps, I would blow the fuse correct????

It is not 30 amps max per lead off of the block correct??
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Old 08-06-2004, 04:18 PM
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Default RE: Fuse Block

Yes under full load.
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Old 08-06-2004, 05:21 PM
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Default RE: Fuse Block

If the 30A fuse is between the battery and the fuse block, then that fuse will blow when there is a total fuse block load of 30A or more, whether or not that load is due to one load or a combination of loads. The individual circuits fed from the fuse block should be protected by their own (usually lower rated) fuses.

You probably know that the rating of the fuse does not determine the carrying capacity of the wire, the size of the wire does. Just be careful because it's not uncommon for circuits to incorrectly have larger fuses installed than safe for the wire size used. No one needs to have overheated wires, melted insulation, short circuits, or a fire !

Good luck, have fun .
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Old 08-06-2004, 05:24 PM
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Default RE: Fuse Block

Thanks guys... thats what I thought, but I read on the blue sea website that each lead could handle 30 amps, so I was thinking that if I put a slightly larger wire I could increase the load capacity as long as each lead was less than 30 amps.

I know it sounds crazy, but thanks I get it... just like I thought!!
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