9 volts on a disconnected circuit
9 volts on a disconnected circuit
(OP)
Setup:
Strip Shopping Center with a 208-volt, three-phase circuit, Main panel metered by the power company, wiring trough fed by main panel and owner installed meters to provide services to tenants.
One tenant is a heath club with receptacles that serve treadmills. On at least one receptacle, the voltage to ground when the circuit breaker feeding the receptacle is turned off is 9 volts. Anybody care to venture a source of the problem?
Strip Shopping Center with a 208-volt, three-phase circuit, Main panel metered by the power company, wiring trough fed by main panel and owner installed meters to provide services to tenants.
One tenant is a heath club with receptacles that serve treadmills. On at least one receptacle, the voltage to ground when the circuit breaker feeding the receptacle is turned off is 9 volts. Anybody care to venture a source of the problem?






RE: 9 volts on a disconnected circuit
Brian
RE: 9 volts on a disconnected circuit
RE: 9 volts on a disconnected circuit
Basic concepts are discussed in http://www.nema.org/engineering/papers/PhanBull88.html
RE: 9 volts on a disconnected circuit
RE: 9 volts on a disconnected circuit
RCC
RE: 9 volts on a disconnected circuit
RE: 9 volts on a disconnected circuit
Don