I know I recently read a thread on this previously (within the last week) but was unable to locate it. I have an older copy of NEMA (not with me right at the moment) and I know for ungrounded systems the cable insulation must be increased based on the amount of time the ground fault is anticipated to exist. however I remember this being more for medium voltage applications if I have a 240V delta ungrounded system is 600V acceptable, is this also in the associated NEMA standard. Thanks.
cable withstand ungrounded?
- Thread starter Mike01
- Start date