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3 phase question

64herald

New member
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0
Location
Selden, New York
I have a mep003a...If I pull a load to feed my house on single phase 240 volt, can I switch to 3 phase and still pull single phase on L1/ L3 for my house and use L2 to feed my neighbors house with 120 volt
 

Isaac-1

Well-known member
1,970
50
48
Location
SW, Louisiana
Sure it is no problem, but not exact as you describe, set to 120/208 3 phase, assuming you don't have any 240V only (many 240V appliances will be happy to run on 208V, just check the data plate to see if it says 208-230, or 230V only) loads, run 2 lines and a neutral to your house, this will give you 2 line to neutral connections of 120V, and a 208V line to line connection, then run the remaining line to neutral to your neighbors for them to use.
 
Last edited:

Keith_J

Well-known member
3,657
1,323
113
Location
Schertz TX
Sure. The 12 kW Lima MAC PTO generator in my M1031 SECM is wired 208 V 3-phase yet has 3 duplex NEMA 5-15s for 120, a single NEMA 6-15 at 208 volt (still single phase) and a honking NEMA 15-50 for the welder, a 3-phase 4 wire affair.

The issue is phase balance, the MAC generator has a magnetic amplifier control with no electronic components for voltage regulation. It all works by magnetic amplification. Pure magic.
 
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