#12 THW current carrying conductors are installed in an 18" length of conduct. What is the derating factor
We know that 12 THW = 30 Amperes
Number of Conductors |
Percent of Values |
4–6 |
80 |
7–9 |
70 |
10–20 |
50 |
21–30 |
45 |
31–40 |
40 |
41 and above |
35 |
Therefore,
Derating factor = 30 Amps x 50% = 30 x 0.5 = 15 Amps.
#12 THW current carrying conductors are installed in an 18" length of conduct. What is the...
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