Re: more lighting questions

Posted by John T on June 26, 2006 at 15:14:57 from (66.244.90.5):

In Reply to: more lighting questions posted by Squire J on June 26, 2006 at 12:38:01:

Squire, You have to start by sizing the fuse so it will pass (without opening) sufficient current to handle the max load of alllllll the operational lights combined. That, of course, depends on the total wattage of whatever lamps you use, but 15 amps is a typical size that could handle perhaps two or three common tractor lights (but depends on their wattage). Once the load and fuse size is determined, you next select the corresponding wire size. For typical tractor lighting I use 14 gauge wire with a 15 amp fuse but if the fuse size needed to be 20 amps (to handle all the lights) then I use 12 gauge wire.

The fuse size SHOULD NOT EXCEED the wires ampacity, because its sized to allow/pass ONLY what amperage the wire is rated to handle without overheating and thus damaging the insulation.

Sooooooooooooooo determine the total load current for alllllllll the lights combined,,,,,,,,size the fuse to handle/pass that load,,,,,,,then match the wire gauge dependant upon the load n fuse (I use 14 gauge wire with a 15 amp fuse and 12 gauge if a 20 amp fuse)

Theres a darn good chance if you use 14 gauge wire and a 15 amp fuse it should suffice, but I suggest 12 gauge wire if you use a 20 amp fuse.

Best wishes n God Bless

John T

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