NEC Journeyman Electrical Questions and Answers with Code References

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NEC Table 310.15(B)(16)

Conductor ampacity of 2/0 at dry location (900C)= 195 Amperes

NEC Table 310.15(B)(2)

The correction factor at ambient temperature (450C) = 0.87

Corrected ampacity = 0.87*195 =170 Amperes