Tell me about Inverters please. - Page 3 - Fiberglass RV


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Old 02-25-2012, 05:29 AM   #29
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Wow, what kind of amperage and how long a run are you dealing with to need that size wire? Raz
If you have a 2000 watt surge, that is 167 amps at 12 volts.
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Old 02-25-2012, 07:24 AM   #30
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If you have a 2000 watt surge, that is 167 amps at 12 volts.
Perhaps, but surge implies short duty cycle. Also Resistance is directly proportional to length and inversely proportional to cross section. A short length should allow for smaller gauges. Six feet (a conservative length from the battery to the inverter) of 6 AWG wire has a resistance of about 0.0024 ohms. At 167 A. a voltage drop of 0.4 V. would occur for a very short time (milliseconds I would guess). Unless I have made an error, I don't see why you would need anything larger. What am I missing? Raz
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Old 02-25-2012, 07:28 AM   #31
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........What am I missing? Raz
He gets the heavy wire really cheap and it is better to be too big than too small.
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Old 02-25-2012, 08:20 AM   #32
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He gets the heavy wire really cheap and it is better to be too big than too small.
It's useful for folks looking for guidance to know that there is no technical reason for having to use wire that size since it may not be as cheap where they live. Especially the end connectors. Thanks, Raz
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Old 02-25-2012, 09:17 AM   #33
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It's useful for folks looking for guidance to know that there is no technical reason for having to use wire that size since it may not be as cheap where they live. Especially the end connectors. Thanks, Raz

That's why you are here.
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