Spike Leg on three phase power
Spike Leg on three phase power
(OP)
What is the "spike leg" on three phase power. My journeyman said Wye has a spike leg on voltage and Delta has a spike leg on current. I have not been able to find this with a meter.
I understand that wye is 120/208 etc. or 1.7 times the single leg when any two phases are measured; and delta is double, 110/220.
Is there any truth to the "spike leg" theory?
I understand that wye is 120/208 etc. or 1.7 times the single leg when any two phases are measured; and delta is double, 110/220.
Is there any truth to the "spike leg" theory?





RE: Spike Leg on three phase power
In that arrangement, Bø is also called stinger/red/orange/purple/power/wild/bastard/high leg. {There is no particular “spike current” on a wye or delta system unless loads are badly balanced.}
http://home.att.net/~benmiller/elecsys.htm has some illustrations of typical US voltage configurations that may help.
RE: Spike Leg on three phase power
and delta connection has the current configuration that could be viewed as spiky, namely,
Ia=Ib=Ic=sqrt3 x Iab=sqrt3 x Ibc=sqrt3 x Ica