That will be one miner per 15 Amp circuit.
So 20 miners total? Electrician installed 20 lines
Did you see that I said 7 rigs in my next message,
just like DaveF said.
7 rigs is the max. in your setup, with that panel, 120V, and those rigs you described.
The rest 13x circuits will remain empty, because you have already maxxed the 100A panel.
I don't know what your electrician has been thinking (or if he even put any thought in to it) when he created that system with 20x 15A circuit, with 100A panel.
You were also explained the math here, so I don't know how you think you could put 20 rigs there.
Let's go 80% max load to be safe. Round it to 20,000W
Lets round it up to 16 as miners dont all pull 1300.