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Q. My client's metal fireplace is supplied by a makeup air system with a built-in circulation fan. This fan - which plugs into an accessible outlet - is triggered by a heat sensor in the fireplace. While effective, it's also very loud. To reduce the noise, I'd like to replace the fan's on/off...
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Q: My clients want to add another light and a second switch to one of their existing lighting circuits, a wall sconce controlled by a single-pole switch. Power feeds the light before running to the switch; because of existing conditions, the easiest option would be to replace the single-pole switch...
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Q. How many receptacles can I put on a 15-amp and a 20-amp circuit?
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Venting with air-admittance valves; undercounter appliances; showerheads
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Q. What's the right way to deliver power to an outbuilding? I'd like to have a panel capable of powering a small shop.
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Q. I'm a remodeler and often work around existing wiring. What's the most practical and inexpensive tool for detecting live current in either romex or wire in a metal conduit? Can you detect current inside the conduit without opening the conduit?
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Q. I am remodeling a 1920s house that has the original knob-and-tube wiring. I would like to blow cellulose into the stud cavities but am guessing that it's not safe to do that with the exposed wiring in the cavities. What does code say?
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Q. An old house I'm working on has too few wall outlets to meet code. What are the rules for spacing and positioning of new outlets? Can I place them in the baseboard trim?
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A master electrician describes how to trace wires, identify circuits, and diagnose common job-site electrical problems.
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Q. I'm doing some wood siding repairs on a house, and every time I hit the trigger on my chop saw, the lights in the house flicker. The power company says the problem is with the house not their lines. But the lights in the house across the street flicker