I have an outdated verision of the NEC. (2005) There is a table which shows acceptable ampares up too 50', and then from 50-100' for different cord types. Table 114.2.
I was wondering if anyone knew of an equation that was used, to figure out the derating.
I am currently tryin to build a L6-20 extension cord at 150' using 10/3 SJT. I know what the voltage loss would be if i ran the full 20 amps however to be to NEC code i was wondering what the maximum amperage rating would be.
If there is a formula that would be great! If not, if you know how they came up with the deratings that would be fantastic.
Thanks!!!!
Croverwin
I was wondering if anyone knew of an equation that was used, to figure out the derating.
I am currently tryin to build a L6-20 extension cord at 150' using 10/3 SJT. I know what the voltage loss would be if i ran the full 20 amps however to be to NEC code i was wondering what the maximum amperage rating would be.
If there is a formula that would be great! If not, if you know how they came up with the deratings that would be fantastic.
Thanks!!!!
Croverwin