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Registered Member #2893
Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
Putting two MOT primaries in parallel on one 120V 15A outlet is certainly not an option, so I was wondering about hooking each one up to a different circuit via an extension cord. Are there any concerns (aside from crossing hot wires!) I must worry about? I can't think of any ATM. (the secondaries are going to go in series BTW)
Registered Member #2628
Joined: Fri Jan 15 2010, 12:23AM
Location:
Posts: 627
I dont see why you shouldnt be able to do this, some household wiering (maybe in kitchens?) have 2 hots, with a common nuetral, but each one is from a seperate 15A breaker, perhaps you can these type of sources, and wire a mot to each socket in the outlet.
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Gatedbreakdown wrote ...
I dont see why you shouldnt be able to do this, some household wiering (maybe in kitchens?) have 2 hots, with a common nuetral, but each one is from a seperate 15A breaker, perhaps you can these type of sources, and wire a mot to each socket in the outlet.
i second GatedBreakdown's point use a 240vac line.
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
you better figure it out. if you dont have them anti phased you wont get output, i think. (both outs will be [+ against +]and [- against -] instead of [+ against -] and [- against +] right?) be careful, try not to die.
Registered Member #2099
Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1716
In case you didn't get the point about phasing, when you choose two household outlets fed by different circuits:
The neutral wires will be at about the same potential. But depending on the panel placement of the two circuit breakers or fuses, your 120V "hot" wires could be same or opposite phase. Your MOT primary connections must be phased accordingly. If you get it wrong, the voltages of series-connected secondary windings will subtract instead of add. No fireworks.
If one breaker trips (or has tripped) while you have a load or arc between the two HV secondary terminals, all outlets on the tripped circuit will be back-fed with voltage from a MOT running in reverse.
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Seperate circuits
