Notice: NEC is a registered trademark of the National Fire Protection Association, Inc.  All NEC references by Electrical Helper are interpretations of the NEC by the Electrical Helper staff and are not NEC statements. The official position of the NEC requires that the NEC be referred to in its entirety.
	We must take the work environment into consideration when sizing our conductors. Just as the National Electrical Code states in Table 310.15 (c) below and is the reason we have included the different ambient temperature ratings for your use.
	Table 310.15 (c) states that - Conduits Exposed to Sunlight on Rooftops. Where conductors or cables are installed in conduits exposed to direct sunlight on or above rooftops, the adjustments shown in Table 310.15(B)(2)(c) shall be added to the outdoor temperature to determine the applicable ambient temperature for application of the correction factors in Table 310.16 and Table 310.18.