DIY Panel Feeder - ECN Electrical Forums

Quote

PVC sleeve from under the house to panel on porch with 2/0 SER cable. Panel was replaced and conductors were not long enough to reach terminals in new panel. Looked suspicious, so had the HO remove plywood cover over the box below the panel. This is how he extended the conductors to the new panel which is just above the top section of PVC in the photo.

- Raymfl

[Linked Image from electrical-photos.com]

This is bad enough, please don't show me the boxes with the covers off.

Ian A.

Well, he did use boxes for the splices. I usually find them loose, hanging somewhere. Good catch on your part though. Are there split bolts inside the boxes? He must have worked at getting them in there and taped.

Recomend 4-11/16 you get more room.

A 4" J box will surfice if you just use the rubber end of you hammer to get the wires in. The other end would only damage the wires and that would be just dumb. I almost forgot. Line the j-box with cardboard just to add a another level of protection. that oughta do it

Cardboard dissolves over time.

If you have enough volume in the box for the conductors and splices but still want some extra protection, wait until the roofer is looking the other way and swipe a scrap of that self-sticking roofing underlayment membrane that they use at the edge of the roof.

Or wax coated cardboard, That oughta do it

C'mon guys, you're missing the obvious easy solution- 20-cent plastic boxes!

Ya! and nylon covers! Good thinking, then you don't need rubber tape and the "33" is optional! Good call.

At least he used 4 conductors to feed the panel, but I bet the boxes are not grounded, or at least one of them is not.

If it starts to arcin' and a sparkin', its a grounded

Originally Posted by jrclen

Well, he did use boxes for the splices.

I don't suppose "Knob and Tube" rules would appy here...

You're suposed to use tubes of "loom"? to protect the wires from the connectors on the boxes... ?

He, the HO decided that this was beyond his capabilities so he hired a EC to correct this situation and it was corrected. Previous to the picture posted, there we no boxes and three conductors to the panel with the neutral splitbolted to a 4/0 green conductor and the ECG cut off at the SER jacket. Didn't have a camera that day.

Ray

Just when I thought I had seen it all!

What about Sections 300.3 and 300.30? Wouldn't splicing those conductors in the manner shown lead to the heating up that metal box containing only a phase conductor and a ground?

does this suffice as an expansion joint?

I'm seeing a box fill problem here, and I agree with what wire_twister said.