STEVETERRY
Well-Known Member
Perhaps Steve Terry could clarify/confirm this, as I thought that there was an allowance in the NEC for 2-fers 18" or less in length to use the male connector as the connecting point for 2 SJ 12/3 cables.
Reason I ask as I purchased a whole lot of new 2-fers all made by TMB with splice in the male and would be surprised if they were all illegal.
SB
The whole reason the NEC allows SJO on twofers is that its smaller diameter will allow two cables into a male connector. The TMB connector (and there may be others) has an enlarged strain relief hold in the cover to accommodate two pieces of 12/3 SJO.
"V" twofers are considered by the NEC to be industry-specific safe practice when properly constructed. 36" is the max length for SJO in this application.
For more details, see this post:
http://www.controlbooth.com/forums/lighting/18270-checking-my-interpretation-nec.html#post168140
ST
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