Two 12-4 Romex cables through the same floor joist holes


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Old 07-05-14, 01:49 AM
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Two 12-4 Romex cables through the same floor joist holes

Hi. Can two 12-4 Romex cables be put through the same floor joist holes. The holes have about a 1 inch in diameter? They would run together through three floor joist holes for about 6 feet before separating and entering a junction box. I thought derating wouldn't apply since there are only 8 current carrying conductors.
 
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Old 07-05-14, 07:05 AM
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You are not going through draft stopped holes, nor are the cables bundled.
 
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Old 07-05-14, 07:39 AM
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12-4? That is unusual. Do you mean white, red, black, blue +ground; five wires per cable?
 
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Old 07-05-14, 10:17 AM
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The 12-4 I am using has a Red-Black-Blue-White and a bare(paper wrapped) Ground wire.
 
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Old 07-05-14, 11:51 AM
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Thanks, was just wondering. Just curious, what are you wiring?
 
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Old 07-06-14, 12:17 AM
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It's to have separately switched outlets on one duplex receptacle and a constant power duplex receptacle in the same double gang box.
 
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Old 07-06-14, 07:36 AM
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Very unique situation with a good choice. Thanks for satisfying my curiosity.
 
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Old 07-06-14, 06:23 PM
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The 12-4 I am using has a Red-Black-Blue-White and a bare(paper wrapped) Ground wire.
More curiosity. I know 12-4 NM-B cable is available by special order, where did you find it? A bit more common, but still hard to find is 12-2/2 NM-B cable.
 
 

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