![]() However, using this exception draws a lot of heat from inspectors and you will often need to defend the choice. One of us is an expert on this clause and hopefully will discuss it. This is to avoid nuisance trips and has nothing to do with wire thermal rating, to which 240.4 still applies. There is an exception in Code for certain large motor loads on dedicated circuits, which allows an enlarged breaker. Generally in <100A circuits you must work with the abovementioned table, plus Your expectation of being able to work out of the 90C column is weird. If you want to breaker it at 20A, then use either #12 copper or #10 aluminum.Īlthough 240.4(D)(6) allows 25A on #10 aluminum on receptacle branch circuits, use of a breaker other than 15 or 20A is outlawed by Table 210.21(B)(3). It must be breakered at 15A due to 240.4(D)(3). You are welcome to use #14 copper wire to lighting or convenience receptacle branch circuits. Nobody is going to recommend working out of the 90C column, and the inspector is unlikely to approve it.Īdditionally, #10 Cu wire will be limited to 30A because of 240.4(D)(7). So its size is decided by the breaker.Īll these numbers for <100A feeders come out of table 30.15(b)(16) working out of the 60C column because of NEC 110.14(C)(1)(a). ![]() Wire from main panel to subpanel is protected by the breaker in the main panel. Is the #14 THWN-2 feed from sub panel to 230v pump sufficient (10FLA)? Consensus is yes per the pump manualĪre the #14 THWN-2 20A circuit feeds sufficient for those lengths (90 deg THWN-2 #14 copper should be 25A)? Consensus is yesĭoes my #8 solid equipotential ground need to connect back to the sub-panel, or is the connection at the pump sufficient to tie back to the main ground? Not back to the subpanel - just to the pump.Īny recommendations for making things cleaner? bonding electrode within PVC at pool filter.230v pump ground (it's not double-insulated).deep end stainless steel ladder anchor plate.3' horizontal under pool coping/pavers around pool perimeter.All 3/4" schedule 80 conduit buried at 18"Įquipotential bonding: ~300' of #8 THWN-2 copper solid (bare) with equipotential connections to:.(3) 100' #14 THWN-2 copper stranded from sub panel to 120v convenience receptacle (L, N, ground) via 3/4 schedule 80 PVC.(3) 60' #14 THWN-2 copper stranded from sub panel to 120v lighting receptacle (L, N, ground) via 3/4 schedule 80 PVC.(3) 12' #10 THWN-2 copper stranded from sub panel to 230v pump (L1, L2, ground) in watertight conduit (#10 to future proof the wire).15A 1-pole (non GFCI) (convenience recept).15A 1-pole (non GFCI) (lighting recept). ![]() I would appreciate any guidance on the following: ![]()
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