Question about Xantrex Technology 806-1800 Prosine Inverter

# Grounding why bother running your negative side to the battary when you could possibly use the truck frame. ?? all diagrams show negative back to the battary thanks howard

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You should run a dedicated cable back to the battery.

The main reason for doing so would be to ensure the cable capacity for the inverter. If you have the equivalent of 2ga cable at the battery post, and your inverter wants to use 100 amps (1200 watts), you have exceeded the capacity of that cable, which also serves the rest of the vehicle electric. In the same scenario, lets say that the frame of the vehicle has a total resistance of .1 ohms as seen by the inverter. Pass 100 amps through that resistance, and you now have a voltage drop of E=I*R = E=100*.1 = 10 volts. The inverter isn't going to tolerate that for long, and it may also cause havoc with other electronic devices as well. Your cable connections will have a lower bulk resistance, usually so low that it becomes difficult to measure accurately with a meter.

Posted on Aug 25, 2009

Hi,
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Goodluck!

Posted on Jan 02, 2017

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