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-   -   12/3 L5-15 extension cord safe for 20a service? (http://www.homebrewtalk.com/f170/12-3-l5-15-extension-cord-safe-20a-service-350926/)

tjash 08-30-2012 01:23 AM

12/3 L5-15 extension cord safe for 20a service?
 
I plan to run 2 2000W elements of two circuits, both of which have outside outlets. One is a T-blade style L5-20, but the other is a standard household L5-15. They're definitely on separate circuits and both definitely have 20A breakers in the main panel.

Any issue using a run-of-the-mill 12/3 extension cord with L5-15 ends to power a 2000W element on an otherwise up to code circuit, since 12/3 can handle 20+ amps?

thargrav 08-30-2012 01:42 AM

12/3 is safe for 20 amps but you may have some voltage drop across the cord if you run a long one. I would not run over 12'.

wilserbrewer 08-30-2012 02:32 AM

Quote:

Originally Posted by thargrav (Post 4372553)
12/3 is safe for 20 amps but you may have some voltage drop across the cord if you run a long one. I would not run over 12'.


I agree completely that this is best practice, I have used a 25 footer without issue FWIW. No naps w/ the power on:mug:

cockybitz 09-03-2012 11:00 PM

The problem with the length of the run would be voltage drop. The heat given by the conductors in the cord is not an issue for 2 reasons. 1) the heat is dissipated over a greater length. 2) The conductor is sized appropriately for the amperage anyway. An underpowered television may suffer with insufficient voltage. An underpowered element would just produce less.

tjash 09-04-2012 01:26 AM

Thanks for the info. After more thought, I've gone back to my original plan of a single element on a 240v system. Simpler, more power, and less hassle with only one power source to worry about.


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