When systems like this get updated over the years, there's never documentation for it. Most of the time, people are just trying to get it working quickly for what they need. You'll notice here, that even though they have a proper grounded outlet (3-prong), they just painted right over it and the cover plate, plugging it up with paint, among other things. This is an easy problem, I'll try to document each of the various frustrations encountered along the way. First, we had to determine which outlets and fixtures were run off the old knob-and-tube wire. Flipping through breakers we found that there was one 20A breaker that fed the knob-and-tube fuse box. Inside that box, there were 4 circuits, each with a 30A fuse. In case you didn't catch that, that's 120A of fuse capacity on top of 20A of breaker capacity. That, is stupid (the comma was intentional to indicate a pause, because it's really stupid). Even better, is that this one breaker fed 5 different floor outlets, as well as every ceiling fan and light in every room. You know what that means...we get to have our fun up in the attic. Great.
so there are little channels cut through the roof boards to access certain areas, others are just a major pain to reach. Much like this one, where we had to go reach into the corner into the roof over the porch, then feed wire back up from the porch light and grab it with a 3-foot long hook I fashioned out of some steel welding rod. Plus it's a little dirty and sweaty. Have I mentioned yet that it's 1,000 degrees in an attic in summer when it's 96 degrees out? The blown-in insulation was clearly not original (though it's also clearly not at all recent, or clean), so it is completely covering all the knob-and-tube wires. First thing, we have to uncover and trace the wires to all the ceiling fans and the walls where switch wires are run.
If you're putting in a new junction box you should: cut a 2x4 that fits snugly between two ceiling joists, screw the junction box to the 2x4, drill a hole through the 2x4 in the center of the box to run the wire through, then have someone check that the front edge of the box is flush with the drywall/plaster, and screw through the joist into the 2x4 with at least two screws on each side to secure it. Not rocket science, but it does take longer than just screwing stuff into the ceiling, so I can see why they wouldn't want to do it...Quick note while I'm thinking of it, make sure you wear a dust mask when working in any attic, particularly old ones. Check out the inside of mine.Now there's all new, properly supported boxes that fans can be securely mounted to. We ran every the Romex to every one, plus to all the wall switches that controlled them, with every box having one hot wire. This way, we can have the fans always powered, operated by the pull chain,
Tom
Currently listening to "Glamorous" by Fergie
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