C cukele Member Aug 19, 2014 #1 Are there any requirements in the NEC to use 2 pole breakers on ungrounded DC systems?
augie47 Moderator Staff member Location Tennessee Occupation State Electrical Inspector (Retired) Aug 19, 2014 #2 It would appear 240.15 would require such.
SG-1 Senior Member Location Ware Shoals, South Carolina Aug 19, 2014 #3 Use caution when selecting the breaker. I have come across at least one that the DC rating depended on the + or - conductor going through both poles in series.
Use caution when selecting the breaker. I have come across at least one that the DC rating depended on the + or - conductor going through both poles in series.