Thanks for the response Dave.  I assume that the voltage dropped off on one of the lines and that is why the machine took in so many Amps.  I am in Mexico and consistent anything is impossible.   But if I had 2 machines on a 40 amp breaker it would basically be the same protection, ( I am asking you, my english is not perfect)   Could you also explain what other protection I could have.   Much appreciated

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

I can vouch for my supplier.  Not so much on used stuff (every used machine I ordered was delivered on time, but the machines were dirty).  But I have bought 10 of the new 85 TH/S Avalons over 3 orders.  One machine was lost in between USA and Mexico and they stood behind it.   Make sure you order with DDP shipping, I have no clue how they get around taxes and all the other BS but they do.  And to be fair about the used ones, the Whatsminers M21 50TH/S were good just a little dirty, but their L·3`s were horribly dirty.  If you go used get a 3rd party to check the machines, it is cheap and worth it.  Theire company name is Leed Manufacturing. PM me if you want more info and I can give you a history of prices I paid.   As for the first part of your questioin, it all depends on your electricity cost, and if you have time to monitor the machines. 

Thanks man, it is not related to the temperature at all.  The second I start it up in a cold dry enviorment, I get first error 351, then within 2 minutes I have all 3 error codes

      Hello, I am new to all of this, probably have no right to be doing something I know nothing about.  I bought 3 M20s Whatsminers, I had a computer guy hook them up and 2 of them ran well.   The third one I get error codes 350,351 and 352 which all say the ambient temperature is to high.  I live high in the mountains in mexico where it is dry and cold.  I restarted and did the little things I am capable of (there is nobody I could find in Guadalajara that knows anything).   I still get the error codes and thought I would try my luck on a forum.  Any help would be appreciated.