Was it because of the common (albeit dangerous and 'illegal') practice of wiring one of these with heavy duty cord to make a "handy" convenience outlet extension cord?
I get the impression the only proper use for the handybox is surface mount wiring with conduit or armored cable.
I also can't see how you would use this inside a hollow wall without a support bracket.
And while some people may think you can use them inside solid concrete walls, isn't there a specific "masonry" box listed for this purpose?
Is this true?
A "self help" book sold at a major DIY shed has a picture of what looks like a handybox (stamped onepiece thing with rounded corners) inside a wall in their chapter on temporary repairs of crumbling insulation inside the box with a heatshrink sleeve
Of course this could be a staged thing on a piece of "fake" wall but you think that these books would go through the effort of showing "the proper devices" in use at all times.
Sven: THe story, as I have heard it over the years...
"Handi" box was christened as it was usable for any single device, or as a "pull point", and it was cheaper than the 4" square.
I have seen them used for all types of things, mostly not legal per the NEC. Multiple cable / conduit entries, and a device stuffed in. They still show up on homeowner installs; most EC's don't use them. Also, you don't need a "plaster ring" or raised cover to mount your device with a "handi box", which results in a "cheaper" install.
Yes, there is a masonry box (mud box) in many configirations. The easy way to tell is they have square corners.
#29835 - 09/26/0305:16 PMRe: Why is it called the "handy box"?
It's been brought up here before. OSHA hates them when they're used for movable extension cords because of the hazards of the dangers of missing knockouts leading to potentially exposed current carrying parts and also the face of the receptacle can be cracked off (receptacles are not really designed for that sort of banging around). It's a case of what use is the box listed for, I guess?