kva should be abrieviated kVA because k = 1000, V is a proper name and A is a proper name.
10.7 kVA is like watts, but different. We'll call it Watts (proper name) for this discussion.
Amps at 120 would be 10700/120 Amps.
I'll let you do the math. 20 A*120 V = 640 VA. As you can see it's not very much power.
It depends a lot on what your going to be welding. If your going to be welding up to the max tickness that tehe welder can do, then no.
It won't hurt to connect to a smaller current service, but it may not be adequate. It depends on what your going to weld.
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