In another thread, Dennis(Alwon) touched on the situation where the Code requires the Branch Circuit to be rated at 125% of the load.
Got me to thinking. Art 424 .3 tells us the Branch Circuit for Space heating must be considered a continuous load thus figured at 125%.
If one had two 240v space heaters 10kw each, our current would be 41.6 amps each and the branch circuit would be calculated at 52 amps. We wire each with a #6 NM and a 60 amp breaker.
424.3 says nothing about feeders, only that the branch circuit needs to be figured as continuous.
Would it be Code compliant to install a #3NM feeder to these two units with an ampacity of 85 amps ?
Got me to thinking. Art 424 .3 tells us the Branch Circuit for Space heating must be considered a continuous load thus figured at 125%.
If one had two 240v space heaters 10kw each, our current would be 41.6 amps each and the branch circuit would be calculated at 52 amps. We wire each with a #6 NM and a 60 amp breaker.
424.3 says nothing about feeders, only that the branch circuit needs to be figured as continuous.
Would it be Code compliant to install a #3NM feeder to these two units with an ampacity of 85 amps ?