This may be a bit of a subjective question, but I was just thinking about it. I've seen many electrical boxes that are full of drywall compound, often to the point of having to dig the wires out of it so you can use it.
To prevent this, should the boxes be taped up (with tape and/or plastic cover) prior to drywall going up, or is this just caused by lazy/sloppy mudding? Is this the responsibility of the electrician or drywaller?
I am a general contractor and I'm having a house redone right now after the electrician and plumber roughed in. I tape off the plumbing and stuff newspaper in the electric boxes and light fixture boxes. When the mudding is done and they do the finish, I'll go around and remove the newspaper and clean up the boxes.
This takes about an hour total time and sparkey and plumber will love you for it. If it's a time and material job, you will save a couple of hours on both subs, so it's a big payback.
When hanging, there's the day laborer way, which is to put the drywall up over the box and then roto-zip the box, and there's the pro way, which is to cut the hole ahead of time because you've got the skill to measure and mark it. When mudding as in the above picture, the guys will often get a big chunk of mud into the box (It's hard not to... especially when working fast with hot mud), but it's their responsibility to get it back out once it hardens.
Construction is changing, though. New standards for energy efficiency are encouraging things like caulking all seams in drywall (especially around outlets), which requires much more care from installers.
IMHO this is sloppy mudding, pure and simple.
If it were my project, it would be the responsibility of the dry waller, but I am not a contractor.
The answers on here are not how I would expect any pro to handle drywall/mudding. You simply stuff the electrical boxes with newspaper. That's it.
Doesn't come out until you are done sanding.
After you take it out you have a few slivers here and there to clean up. You use a utility knife (no automated tool - which would be slower and cause a dust mess).
You are left with a clean box that has mud protection around it. This is basically free and you can stuff all the boxes in a house in a few minutes.
