Recommended Breaker and Cable Sizes

CAUTION
hazard of fire Connect only to a circuit with the below specifications. Connect only to a circuit provided with a 1200 A branch circuit overcurrent protection maximum in accordance with the National Electrical Code, ANSI/NFPA70, and the Canadian Electrical Code, Part I, C22.1. Failure to follow these instructions can result in injury or equipment damage.

Cable sizes in this manual are based on Table 310.15 of the National Electrical Code 2014 (NEC) with the following assertions:

• 90 °C conductors (THHN) for 75 °C termination

• Not more than three current carrying conductors in each conduit

• An ambient temperature of 30 °C

• Use of copper conductors

• 100% rated breakers

If the ambient room temperature is greater than 30 °C, use larger or additional parallel conductors in accordance with the correction factors of the NEC. The maximum allowable conductor size is 600 kcmil.

Equipment Grounding Conductors (EGC) are sized in accordance with NEC Article 250.122 and Table 250.122.