DUnderwood
Member
- Location
- Louisville, KY, USA
We have a military customer who insists that our combiner boxes cannot be opened during the day without a hot work permit, because there is voltage present over 50 volts and it is an arc flash hazard. We explained that there is no current flow when the inverters are off and that the devices are current limited, but they still insist we need the hot work permit. Does anyone have any experience with calculating DC arc flash HRC?