220 Volt floor plug

[Barnabas]

possible, but I wouldnt do it. If you have some $ to spend on it, the floor boxes used in Theaters would be a good choice, as they can have the cover closed with a cord plugged in. Here is one example http://mail.altmanltg.com/publicsyn...eload=1&Country=US&Show=0&Account=&L1=1&C1=32 Could use something like Leviton Wetguard twistlocks to keep the dust out.

I work in lots of theaters doing sound and stage lighting. Most new theaters do NOT have stage pockets in the stage. Most of the older theaters where I work have their stage pockets taped over, so you can't use them anyway.

For my shop, lines from above mean more cable $, but can be moved around if the shop layout changes. If your layout will never change, then floor pockets might be a good idea.

 

[mattbal]

I had used them for a work project back in 2010 or 2012. From what I recall the recessed outlets were like 10 or 20 TIMES the cost of a regular outlet. These were approved for wet areas. If there is no other option, or you really want to go with in floor, and don't mind spending the big bucks there are safe options.

Matt

 

[TurnipTruck]

I buried 2” pvc conduit in the gravel before pouring concrete. The stub-ups are 3” proud of the floor and are centered in each shop, one under the steel table with liquidtite flex to a hardwired welder, the other was going to end up hardwired to a large table saw until I changed my setup and had to cut it flush and sealed to eliminate a tripping hazard.
I should have buried another on the metal side for 120v. A third conduit would have been nice for air, too.
I drilled a few 1/8” holes in the bottom of the conduit to drain any water that might have collected in the two years the slab was exposed to weather.