mwm1752
Senior Member
- Location
- Aspen, Colo
Does this apply to thermal insulation surrounding the SER cable in dertermining the conductor temperature rating of 75C or 60C. If you have 100' run of ser cable with less than 10% in thermal insulation can the 75C amperage be used. Assume your terminals are rated @ 75C.
310.15 Ampacities for Conductors Rated 0?2000 Volts
(A) General.
(2) Selection of Ampacity. Where more than one ampacity applies for a given circuit length, the lowest value shall be used.
Exception: Where two different ampacities apply to adjacent portions of a circuit, the higher ampacity shall be permitted to be used beyond the point of transition, a distance equal to 3.0 m (10 ft) or 10 percent of the circuit length figured at the higher ampacity, whichever is less.
310.15 Ampacities for Conductors Rated 0?2000 Volts
(A) General.
(2) Selection of Ampacity. Where more than one ampacity applies for a given circuit length, the lowest value shall be used.
Exception: Where two different ampacities apply to adjacent portions of a circuit, the higher ampacity shall be permitted to be used beyond the point of transition, a distance equal to 3.0 m (10 ft) or 10 percent of the circuit length figured at the higher ampacity, whichever is less.