Looking for advice on protecting floating homes with 30ma ground fault sensor. 240V 1P 4W drop from RV pedestal mounted on walk way. Have required 100 ma sensor on 600 amp feeder main on shore, just wanting added protection at each of 14 floating homes and for trouble shooting. Would normal imbalanced phases of residential load cause normal ground fault relay to trip? They don’t calculate phase differences and compare to neutral load? NEC 555 seems to be aimed at marina loads that balanced, 1P, H and N balanced. 2P phase loads balanced and 3 P loads balanced.