I’m guessing an engine-block heater and laptop per stall, and it was a rush job for Antarctic –30° due any day now.

I wouldn't thow my beer can in that receptical,(pun intended)sparks may fly.

Not to go off on a tangent, but...

Anyone have a way of anchoring stuff to those sheet metal panels that they're happy with?

Let's see weather proof covers, Check
Plenty of Support for conduit, Check
Weather proof fittings, Check
If this was in the Mojave desert, it might not have any moisture problems.

John Steinke wrote:

Yep, Aim for a stud! If not, there's not a whole lot more that self tapping button heads I can imagine...

rhagfo, The Mojave is known for flash floods during certain times of year! Not to mention the occasional high desert freak snow drop...

Im really curious what the purpose for these are... Vending machines maybe? Install by Pepsi's in-house handyman?

-Randy

On sheet metal I'd use two-hole straps with 1/4" bolts with nuts & washers on the back side.

Dave

As the smart(dumb)alec that I am, the plugs are upside down...S

You use #10-12-14 Fastenes on this stuff. Like Randy said, hit the studs.

I agree with the above, you either hit the structure inside or you have trouble with anything more than the smallest raceways and boxes.

In a pinch I have used toggle bolts on this with a fender washer to cover the hole. A little spray paint that is a close match hides the washer pretty well compared to leaving it shiny zinc.

This is a poor option if you can see it from inside the building though.

If I had to do that job in the picture (with the right boxes) I would probably use at least four #12 fasteners and a full layer of silicone adhesive between the box and the wall.

Bob