What size wire (cable) to use to connect batteries from alternator at 25 ft?

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What size wire (cable) to use to connect batteries from alternator at 25 ft?

ALTERNATOR HAS A 250 AMPS CAPACITY-- THERE IS THREE RV/MARINE 12 VOLTS BATTERIES HOOK UP IN PARALLEL- WHAT IS THE FORMULA TO CALCULATE THE SIZE WIRE? DISTANT OF 25 FT.

2006-10-29 08:57:47 · 3 answers · asked by jjjn46 1 in Cars & Transportation ➔ Boats & Boating

3 answers

#2 is about right but i would avoid welding cable. use something meant for the job. engine cables in a boat live a tough life and 25 ft of the good stuff isn't going to break you.

2006-10-30 01:58:12 · answer #1 · answered by glen t 4 · 0⤊ 0⤋

For best results use AWG#2 size welding cable but did you know the high price of copper these days really have driven up the cost.

2006-10-29 09:01:24 · answer #2 · answered by John Paul 7 · 1⤊ 1⤋

No smaller than a 10 gauge.

2006-10-29 09:01:50 · answer #3 · answered by WC 7 · 1⤊ 1⤋