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2

A three-way, or single pole double throw (SPDT), switch should be able to do what you want. Connect the ungrounded (hot) line feeding the switch, to the common terminal on the three-way switch. Connect the ungrounded (hot) line feeding the main light, to one of the switched terminals on the three-way switch. Connect the ungrounded (hot) line feeding the ...


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Do not buy a bathroom fan, as they are generally rated to run no more than an hour or so at a time. You want a fan that's rated for continuous operation. Do make sure your attic has sufficient ventilation area that you don't generate any back pressure. Similarly, figure out some way to get plenty of air into the closet, e.g. a screen panel in the door. ...


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I'd have no concerns at all in doing this, assuming a well-ventilated attic. Be sure you have a functioning backflow preventer to keep cold air out in winter. Being more dense, it'll have a tendency to fall into the room.


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First, "recommended"? Coming from a contractor and engineer, it sounds like a good solution, and it will work. You don't need two fans. One with a transfer grille will do. Power-wise, I have to this in IP so bear with me. Room 1 is 5 x 7 x 3.28 x 3.28 = 376 ft^2. Rule of thumb- and this is only an estimate - is 400 sq ft \ 3.5 kW. (1 ton refrigeration = ...



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