Conduit run and extra wire

stryped fired this volley in news:ab7ff1af-1b5d-447a- snipped-for-privacy@t18g2000vbj.googlegroups.com:

Install a large enough 'j-box' a few feet away from the panel, and coil up the extra in it. Unless you're running some really big pipe, it's impractical to double-back on the wire.

LLoyd

Good procedure is to run the wire into the panel, all the way to the far end of the box, then back up and to the breaker. This allows for breaker rearrangement, and doesn't violate any safety requirement as long as it's pushed to the walls of the box.

Another good thing about placing large pull-boxes in the run more often than required (after each 360 degrees of bends) is ease of repair or replacement. You might get the run to be one piece today (pull both directions from the box in the middle, then loop up the last 18" of slack in the box) it might not be so easy to pull later.

If you have "reversible" guts in the sub-panel can and you have the wire entering at the bottom, rather than reversing the guts so the lugs are at the bottom like the instructions say, you leave the lugs at the top and run the wires around and up to them.

The Electrical Code folks are going to get up in arms at leaving that slack in the can - but they aren't the ones who will have to fix it in the future, you are.

If you ever have a line lug problem and you burn up a few inches of wire to where it won't reach the top of the can any more.... THEN you flip the buss to have the lugs at the bottom, and you now have all kinds of slack.

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