gburch@ameritech.net
Member
My client is installing new elevators in an existing highrise building. The elevator equipment supplier is requesting an isolated ground. The existing feeder equipment ground protection is via the conduit system. Installing a isolated gound in the existing feeder is not an option.
Is it within the NEC to provide an isolated ground conductor run seperately from the circuit conductors back to the main service ground?
Or is an isolation transformer the option?
Is it within the NEC to provide an isolated ground conductor run seperately from the circuit conductors back to the main service ground?
Or is an isolation transformer the option?