Here a related post my new comment is at the end.
Posted by Craig (way-gate.merant.com,220.127.116.11) on July 19, 2001 at 06:37:20:
In Reply to: #14 awg on 30 amp!@#$% posted by Jim W on July 18, 2001 at 21:02:30:
I'm pretty sure what you refer to is a 30amp branch circuit supplying individual 15amp duplex receps. I think the underlying logic is that the device, in this case a 15a outlet, is only capable of drawing 15 amps in normal use. Therefore, the #14 pigtail will only be required to handle 15amps which is within it's ampacity. A direct short will cause a breaker trip before the wire heats sufficiently to cause fire, and since the pigtails are within a j-box, it's unlikely that there will be
flammable material to ignite anyway. Obviously this all goes to hell if some joker wires a 15amp plug to a 30amp device, but he gets what he deserves.
Posted by Jim W (papm3-02-207-79.dialup.dstream.net,18.104.22.168) on July 19, 2001 at 09:19:23:
In Reply to: Re: #14 awg on 30 amp!@#$% posted by Craig on July 19, 2001 at 06:37:20:
I think you have a track lets follow your line of thinking, a light will have fixed #14 wires but the load is known 100-600 watts, a outlet or device is rated at 15amps so #14 is ok, assuming you do not plug in more than 15 amps! The union electrician I was working with (a learning experience)was using #14 solid to attach outlets and switchs to a 20 amp branch circuit with #12 stranded wire in the emt and j-boxes, I said no-way, he says yes you can look how easy it is, as he bent the wire with his fingers. I agree it was much easier and faster also, when you stuff the box more room. But following this line of thinking why cant I string 6 15amp duplex recp. on a wall with #10 stranded in the emt, than just pigtail or "tap" the recp. with #14 solid. slap a 30amp breaker on it and whamo. Can I do this? It would have saved trouble on a stage I wired!