I have a new single phase 240 volt electric dryer to replace an existing dryer. The existing dryer receptacle and supply cord is 3-wire without ground. The supply power is 240/120 volt 3-Phase 4-wire High-Leg. This is an existing outlet with with all 3 voltages present, 240/120/208. When the cord was installed on the old existing dryer, the high leg (208volt lead) had to be installed on the terminal block of the dryer that is not connected to the internal electrical parts that operate on 120 volts.
NEC Rules Only,
Question #1: Is it acceptable to hook up the new dryer this way also?
Question #2: Does the new cord and receptacle have to be replaced with 4-wire devices.
NEC Rules Only,
Question #1: Is it acceptable to hook up the new dryer this way also?
Question #2: Does the new cord and receptacle have to be replaced with 4-wire devices.