It looks the 2014 code dropped section 690.8(B)(2)(c). In my opinion, this section is still important and I will continue to consider this when sizing DC conductors. The derated ampacity of the conductor must be protected by the required minimum OCPD size. What this means for example is that if you are required to use a 250A fuse, and the derated ampacity brings you down to 220A, you must upsize the conductor until the derated ampacity is greater than 225A.
Does anyone know if this section has moved or what the thinking is here?
Thank you,
Does anyone know if this section has moved or what the thinking is here?
Thank you,