Sparky don't get too excited about that Home Depot coming to town. Sure they'll have a basic white recptacle, don't they've never heard of light almond. They'll sell you a GFi outlet for $6, but they don't sell a decent bubble cover. Need #1 SER or 0 SEU or how about some #4 triplex, don't go to HD. You say you need a 20 amp Sq. D QOB 3 phase breaker, well Home Depot doesn't sell bolt on breakers, much less anything in 3 phase. The only thing I regularly buy at Home Depot is my 10, 12, and 14 gauge wire, they are 45% cheaper on those sizes than my main supply house. But I do understand your problem that's why I keep open accounts a 3 suppliers so I'm not stuck with one choice.