well, there are these little eye bolts that Lee Valley sells, you glue them to the wall, then run string, fishing line, or wire through them... essentially making a trellis ON the wall. this allows you to do things like radiant suns, harlequin patterns, and the like. or you can build your own trellis out of PVC pipe, or copper, you CAN glue the joints instead of soldering them ;) I've also cobbled some nice ones together from 're-bar' the stuff you use for reinforcing concrete, and bamboo as well... but the PVC is fun, because it's got a bit of bend to it, and you can make arched tops easier.

Jane... I use livestock fence panels. They are 52 inches wide by 16 feet long and made of galvanized steel so they will not rust or fall apart. You can lean the wall when you're not using them or leave them in place all year long. Since they are metal gray in color they somewhat blend into the background when they are bare (see last photo). I get them at a local building/farm supply store (McCoy's) for about $15 each. The inside rectangles are about 6"x8" and the wire is 1/4" thick so I use bolt cutters to cut them into 16 foot strips that vary in widths and make arches with them. I then clip off the bottom 'rung' from each end and push the prongs into the soil. I also got creative and welded one into a 'staircase' trellis. You can see the 'prongs' at the bottom of each side of the staircase trellis - that's what I push into the ground to stabilize them. ~ Cat This photo shows an arch I have over my front walkway and also a panel I used as a divider between my walkway and the front flowerbed - both had heavenly blue morning glories growing on them last year (this year I have a purple passion flower started on the arch and a red passion flower started on the divider - will take photos when they fill out) This one is the welded 'staircase' trellis - I have since moved it to the side of the house and have a blue thunbergia starting to grow on one side and a red mandevilla started on the opposide side. Photo showing what the panel looks like (there's another piece arched over in the background) Photo of a bare arch and a section I used as a backing.

I thought the metal feet were soldered on. Have you looked into getting an iron-smith to help you? Or, look on eBay.

Brickeyee, Apparently there was some mis-communication about the use of plastic boxes with metallic clad cable. I knew that the clamps were rated for NM and presumed you were talking about the entire box. Spencer, Interesting question regarding bonding. Obviously we're talking about cable like type MC with a separate grounding wire or flex with a separate grounding wire. AC couldn't be used because there would be no way to ground the device ruling AC out immediately. If there was a fault and the jacket became energized the current would have to travel down the jacket until it reached a metallic box. I don't understand your comment about 100 ft up and 100 ft back. Seems like it would be a straight shot to me but maybe I'm not seeing something. If the code requires both ends to be bonded (I don't know) then a bonding lock nut seems to be the only way to accomplish that.