Which is more common - split phase or 3 phase wye?
Which is more common - split phase or 3 phase wye?
(OP)
In an industrial laboratory environment - (metalurgical / chemical lab) - which is likely to be more available a) split phase wiring which would allow me to get a 240v supply from the two hot legs b) 3 phase wye wiring which would allow me to get a 208v supply or c) both are usually available in the same lab. I've a heater in some equipment which is borderline in capacity and the prospect of only having 208v available might mean I can't get sufficient heat from my equipment.
Cheers
Mark
Cheers
Mark





RE: Which is more common - split phase or 3 phase wye?
For specific equipment not available in the voltage that you have, a buck/boost autotransformer can be used to obtain the desired voltage. Changing from 208 V to 240 V or vice versa doesn't take much of an autotransformer since the voltage difference is so small.
RE: Which is more common - split phase or 3 phase wye?
By the way, in answer to c), there is rarely if ever a dual service in a facility.