Sure I have! But you have to get the rest of the panel to look just right
too. First strip off all of the outer jackets on all the wires to make
certain absloutely nothing has a label. Braid wires from one bundle to
another bundle at random. Then strip back the insulation off the first
3"-6" so you can short any wire you want with any other wire. If it is
solid core wire nick the wire when you strip it, so it snaps the next time
it is touched, or better that it snaps all by itself for a good source of
service call billing in future. If it is stranded wire make sure only a
single strand out of the bundle is actually connected under the terminal
strip. Leave all the other strands free and frayed. Next run wires thru
the can that don't actually land there, putting 120VAC on a zip wire and
putting the transformer in there to warm things up helps. Make certain
there are several extra sets of pull wires in the can that go nowhere.
Have wires that are so tight you can play musical notes on them mixed with
wires that fall out on the floor when the panel is open. Don't clean up
the area. Put all the pieces of wire and jacket etc. in the box just to
let someone know you've been there. Use bare 4 guage wire and ground the
panel to a gas pipe, and tie strap the wire to a fire sprinkler pipe along
the way if you can. If that is not available just ground the panel with
the neutral from the 120VAC zip wire. Make sure that there is so much crap
in the box it takes the weight of two guys pushing and a third guy with a
screwdriver to close the box. Don't forget to staple all of the
instructions on the wall next to the panel, page by page, when complete.
Be proud of your work and take pictures to show your boss.