Re: [RE-wrenches] NEC Art 310 Ampacity

2009-08-06 Thread Dave Click
bles, the ampacity of the conductors shall not exceed the allowable ampacities in the following tables: (1) Table 310.20 for conductors rated 0 through 2000 volts (2) Table 310.67 and Table 310.68 for conductors rated over 2000 volts *** Original Message ---- Subject: [RE-wrenc

[RE-wrenches] NEC Art 310 Ampacity

2009-08-05 Thread Peter Parrish
When we do ampacity calculations, we always use Table 310.16 in Section 310.15 for wire in raceway (EMT, PVC, FMC, LNFC, LMFC), and MC cable. Of course we use Table 310.15(B)(2)(a) in a raceway or cable with more than three conductors. A colleague asked me about the applicability of table B.310.1.