DC arc

jerry

New Member
Sep 25, 2019
1
0
0
59
#1
During a recent NFPA 70E (Low Voltage) class, I was asked a question about Table 130.7 (C)(15)(b). Specifically, these folks may encounter very high DC fault currents and noticed that this table does not account for DC fault currents above 15kA (or 10kA if greater than 250V).

I don’t have a very good handle on their tasks, but they asked about currents > 15kA. I suggested an ARC4. What are your thoughts?