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Q: What capacity of battery for 20kva ups 30 minutes backup time?
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What size cable needed too run 20kva 320 meters?

I'd need to know the operating voltage, because if the operating current is high and the voltage is low, then you would need rather thick wire. If you are using a high voltage application, Wiring could be brought down a bit. Let me know!


How do you convert AMPS to KVAs?

A rough guide is to divide kVA by the supply voltage then multiply by 1000 to get current in Amps. E.g. 20kVA divided by 120V is 0.167; times 1000 is 167 Amps. But kVA is not the same as kW, so more information is needed before equipment is used.