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Hi everyone, I have a question about running AC ducts from a trunk in the attic to the first floor. The total run for each duct is approximately 30'. One duct is for a laundry room and the other is for an adjacent bathroom,which is a bit longer. This was done before we bought the house, however...

Anyone?

What box does everyone use to accommodate NM-B 8/3? Any issue with using a plastic box with a NM-b cable clamp (the metal ones)? Do you guys not worry about a clamp and just secure the cable close to the box? I was thinking about using a metal box, but then how does ground get pigtailed? Thanks...

I spoke with the inspector that handles local codes and he said, while there is no restriction for using conduit within walls or above joists, which may be hot, it is not "best practice". He went on to say that I should just run NM from the panel and stub out to a weather proof box on the...

Yeah, I am aware of the ratings for the individual conductors and the fill table. My calculation yielded 3/4" for PVC or EMT (I am aware there are different values for conduit types). I agree that it's a great idea to call an inspector, I have a call out to him. Let's see what he says. Yes I am...

Should I just forget PVC and go with EMT inside the walls for the garage and transition to PVC outside the garage and into the ground? Would this be a better option?

Yes, but the UL listing for schedule 40 states the following. It is possible I do not understand the listing. 1.2.3 The following restrictions apply to use of the Schedule 40 and Schedule 80 rigid PVC conduit and fittings mentioned in 1.1.1: a) Use at 50°C (122°F) and lower ambient...

Thank you, but correct me if I am wrong, isn't there a 122 degree max ambient temp. limitation with PVC conduit? I live in NY (Long Island) and the conduit will be run above the ceiling joists. There will be insulation between the joists. Not sure how hot it can get up there, but I imagine it...

Hi everyone - I decided to go a different direction with my shed electrical and use conduit from the sub panel inside my nearby garage. The garage is connected to my house and the panel is on the house side. I would need to run conduit up the wall, over the ceiling and down the opposite wall...

Thank you everyone for the replies.

Anyone?

I plan on running 10/2 UVF cable from a sub-panel for a 20A dedicated circuit to power my shed. It is 10/2 due to the distance from the sub-panel to the shed. I am planning on a 20A fusible disconnect at the shed and since I am using direct burial, the trench will be 24" deep. The location...

Thank you. All excellent responses. So I will plan to semi-encapsulate the crawl space, meaning, floor vapor barrier and polyiso on the walls. I would still love to glue to sub-floor, but unsure about vapor barrier that gets installed on top of the joists. Can I just install the barrier from...

Awesome - thanks for the detailed reply. The joists are 8" and I have a decent amount of plumbing under the joists - copper for heat, water to washing machine and drain. So is looks like option b is out of the question. Are there other options? Can't I just lay down the barrier on top of the...

To add....I am not looking to convert the space to conditioned.

I have been searching high and low for the answer, even called the support line for the insulation I plan on using. I live in NY and remodeling a small 20' x 8' room that is above a vented crawl space. I plan on using Roxul insulation between the joists that does not have a vapor barrier...

Thank you for the reply, but is this a common problem? Meaning air leak issues with air handlers? My parents have a Trane unit and do not have these issues. Is it brand specific?

We have a Bryant system for central AC. The air handler is installed in the attic. We recently got a new roof installed - all new plywood, shingles, etc. On hot days we can smell the roof within the house. I went to the attic and noticed that air leaks where the refrigeration lines enter the...

I noticed on a new cable run to my dryer that the cable gets slightly warm, along with the breaker after running for 30 minutes. The only reason I noticed it was that I was running additional cables to the panel, which were cold to the touch, but the cable for the dryer is slightly warmer...