NEC 690.7

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Mark Leon

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Hi I am new to this forum and did search for this info but did not find it.

I am in a time pinch and don't have a copy of the code book. I need to know what the multiplier is for a the next temperature higher on the table 690.7 to find Max Sys. Voltage. I had used 15 degrees as my lowest temp but that might be too low.
I am amazed that I can't find a copy of that table anywhere on the web. Apparently if you don't buy the book you can't get any of the tables to look at!?

Thanks
Mark
 
Re: NEC 690.7

Degrees F - - - - correction factor
77 to 50 - - - - 1.06
49 to 32 - - - - 1.10
31 to 14 - - - - 1.13
13 to (-4) - - - - 1.17
(-5) to (-40) - - - - 1.25
 
Re: NEC 690.7

Also: Look at the FAQs within the NEC topic area. There is a description of how to gain free on-line access to the NEC. I just tried it, and was able to find Table 690.7 in under one minute.
 
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