If so desired you can provide a 400vAC three-phase supply to a caravan but you must not exceed 48vDC. Any one know or care to speculate on the reason for the DC limit?
Surely it is Section 721 which applies. So we have 721.313.1.2, which says pretty much the same thing.
The occupants of the caravan are protected from normal AC supplies (single or three phase) by ADS and additional protection. No such measures are required for a D.C. supply, which could be from batteries, or a vehicle. Note that 48 V is the norm in hybrid and all-electric vehicles. Such a voltage should not kill you, but I am not volunteering to complete a circuit which consists of four lead-acid accumulators in series. ?
Surely it is Section 721 which applies. So we have 721.313.1.2, which says pretty much the same thing.
The occupants of the caravan are protected from normal AC supplies (single or three phase) by ADS and additional protection. No such measures are required for a D.C. supply, which could be from batteries, or a vehicle. Note that 48 V is the norm in hybrid and all-electric vehicles. Such a voltage should not kill you, but I am not volunteering to complete a circuit which consists of four lead-acid accumulators in series. ?
