Re: wire guage vs. amperage

Posted by buickanddeere on September 05, 2005 at 20:55:53 from (216.183.136.2):

In Reply to: wire guage vs. amperage posted by mark h on September 05, 2005 at 19:50:53:

When using light weight wire VD becomes a problem. Your alternator will be making 13.8 at the output terminal but your battery maybe seeing 12V to 13V while taking a heavy charge. This can be overcome with a three wire alternator with the voltage sensing wire ran right out to the battery.
I was just measuring the lamp voltage on my son"s garden tractor. She was making 14.0V at the starter-generator output terminal. However the votage drop left only 12.4V at the lights. That 16 and smaller gauge wire is best left for inside radios etc.
Use the extra flex copper wire with a thick abrasion resistant cover.

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