In the water heater circuit example in this chapter, the minimum size conductor, if all terminals are rated 75 degrees Celsius or higher, is ____ AWG as the ampacity in NEC Table 310.16 is 85 amperes. A)4 B)8 C)16 D)32

Question

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The correct choice is 4 AWG because according to NEC Table 310.16, a 4 AWG copper conductor with a 75 degrees Celsius insulation rating has an ampacity of 85 amperes, which matches the requirement.

In the Water Heater Circuit Example in This Chapter, the Minimum