I have 10 machines, with a partner and the other day we burnt up some lines coming in from the grid. When my electrician checked the amp draw on each hot line it was 15 amps. That means the machine was using 30, which is way over their specs. Do you guys but regulaotors in or just run each machine on its own 20 amp breaker. Thanks for any feed back
Miners and almost everything that works with electricity is rated at W and not amps unless the voltage is specified then it's wrong to use these amps readings, the Avalon 1246 draws 3420W -5%~+8%, so at worst it's 3,700w, there is no way it would use 30 amps unless the voltage is 123V, but then you said your guy measured it which mean you are suggesting that miner was indeed running at 123V which isn't possible as the PSU would shut down at that voltage.
What is the voltage you are using on these gears anyway?
Finally and most importantly, if you managed to burn the line coming from the grid, it's likely because your main breaker size is way too large, it should be smaller than what the wire can handle so that it will trip before the wire gets too hot regardless of the voltage, also if the ends aren't tight enough that is just a recipe for disaster.