Well, my biggest problem is the box & receptacle. They're not designed for mobile use.
Knockout slugs in the box get broken loose, exposing dangerous current-carrying parts. The plastic face of the socket can also get cracked.
A more "respectable" use could have been to get a female rubber connector (which are LISTED for such use) and use that instead of the handibox. If you need more sockets, plug a six-outlet power-strip into the rubber connector.
I won't get into the quality of the receptacle the person used. It's one of those 50 cent Home-Depot specials by Leviton (bad experience with those, they are very flimsy in construction).
Then there's the issue of the plug. It's got no strain relief cord-clamp (easier for the wires to get ripped out) and it's not a "dead-front".
One positive thing I can say about this, is that the maker bonded the box with a pigtail to the device & the extension cord.
[This message has been edited by SvenNYC (edited 11-08-2004).]