Hey hiboy, thanks for all the free electrical information. I'm setting up a new room, and I've got some new equipment. Ideal air mini split and ideal air dehumidifier. They both need to be connected to a direct line, both on a 15 amp breaker. Also I need to add two 15 amp breakers for my new 1000 watt digs. I would rather run two 15 amp breakers for the lights since I have two 120 v high heat cut offs, with only one plug on each. From the panel to the final location of the 1k light receptacles will be roughly 45 feet. The humidifier will be around 50 -55 feet. The a/c mini split will be outside around 55-60 feet. I have 14-2 romex to run with. Plenty of space in the main breaker panel.
The questions I have are concerning the length of the runs. I've heard you need to run 12-2 at lengths over 75 feet.
Also, this install will be a temporary one. I need to be able to easily remove all the wiring when I move, plus I have no desire to cut into the drywall. So, I plan on running the romex up through the attic and then have it run to the room. ( should I tack the wire to the rafters, or run it along the base of the attic?) I will run the romex through the ceiling, what is the best way to seal the hole I run it through, and do I need to run it through smurf tube at this point, and what size? When I mount my single gang box can I mount it "open air" as in not to the main stud of the wall. Do you prefer pvc boxes, or metal for these applications?
I guess that last paragraph means what is the best way to mount my boxes and run my wire through the ceiling without butchering the ceiling and wall?
I've read a lot of your answers, and I realize this is a long one, but I just wanted to see what you thought of this particular set up. Thanks Hiboy!