Abstract: A rugged, low cost and accurate method for positioning electrical boxes on vertical wall studs utilizing a jig, for positioning electrical boxes, including a support assembly and one or more electrical box retainer assemblies. The support assembly has a vertical member with a handle and at least one elongated vertical slot through which one or more retainer assemblies may be slidably affixed. Each retainer assembly includes a retainer block that, importantly, has an interference fit, i.e. a friction fit, with the interior walls of standard electrical boxes.

Abstract: A frame that folds to a compact, folded, generally flat shape, and that unfolds to an A-frame with spool-receiving bars hung preferably on both the front side frame and back side frame of the A-frame. The spool-receiving bars are removably received in the cradle spaces of open-topped brackets that extend from the frames. Preferably, no connection is made between the A-frame and the bar or spools, except that the bar rests securely in the brackets due to gravity. Each bar has at least one, and preferably only one, set of radial plates near one end. The plates are spaced to abut the sides of the bracket and/or the side surfaces of the preferred square tubing of the frame legs, so that the plates prevent axial movement of the bar so that the bar ends do not slide or fall out of the brackets. The plates may be sized to also act as a retainer for holding the spools from falling off of that end of the bar when the bar-spool unit is being removed from the caddy and transported or otherwise handled.