Ambient Temperatures

[aelectricalman]

I was reviewing the calculations section from the Mike Holt Master Exam when I stumbled upon this question.

What is the ampacity of eight current-carrying 10 THHN conductors installed in an ambient tempurature of 100 F?

I found a quick reference chart but it does not have 100 F as one of the selections. Is there a place I can go to calculate the ampacity taking in to consideration ambient temp? I know there is but I cant find it, and Im getting crazy here. Thanks for your help fellers!

 

[winnie]

Take a look at the 'correction factors' at the bottom of table 310.16, and combine them with the other ampacity adjustments (eg. 310.15(b)(2) specified in 310.15.

-Jon

 

[nyhockey]

Table 310.16 below it are correcton factors for ambient temps.

 

[nyhockey]

Take a look at the 'correction factors' at the bottom of table 310.16, and combine them with the other ampacity adjustments (eg. 310.15(b)(2) specified in 310.15.

-Jon

You are FAST

 

[aelectricalman]

i was even on that page and couldnt find it. Thanks

 

[aelectricalman]

i see said the blind man

 

[aelectricalman]

i see said the blind man

25.48 or 25 amps. yay