Questions tagged [copper]

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13
votes
9answers
182k views

How do I “fix” a bad sweat (solder) joint?

I tried soldering some 1/2" copper (to make something like this) and some of my joints are horrible. I tested it with water and some of the joints leak. What is the best way to fix the joints? ...
4
votes
2answers
3k views

Corrosion on copper pipes due to insulation (with foam)

My incoming water pipe is copper and it is a brand new installation with no leaks. But due to the hot humid weather (even in the basement) it sweats due to condensation. Should I insulate it? The ...
5
votes
1answer
2k views

Should a twisted copper pipe be replaced?

While replacing a hot water tank I foolishly twisted the out pipe by losing my grip on the wrench. The copper pipe twisted, so I twisted it back gently, but it now has a kink in it. Is this likely ...
2
votes
3answers
6k views

Wire nut several wires together

I need a wire nut large enough so that I can bundle seven 14 gauge neutral wires together. I am trying to splice it so I can connect it to my new smart wifi leviton light switch. I don't know which ...
1
vote
2answers
145 views

Problem with NPT threads on dual check valve?

I'm installing a 1" Watts LF7R dual check valve backflow preventer and this model has a female NPT thread on both ends, according to the documentation, and it does have 7 threads and looks like it's ...
0
votes
2answers
407 views

How should I modify this drain pipe

I just removed a fiberglass tub/shower alcove and with to create a walk in shower. I need to relocate the drain, to the center of the alcove. I also need to get rid of the "periscope" part of the pipe....
0
votes
2answers
11k views

Repair holes in copper pipe

The drain pipe under my sink is made of copper and has a couple of small holes just before it goes into the wall (and eventually leads out to a greywater tank). The picture below is taken from ...
0
votes
1answer
189 views

Is underground electrical cable underwater capable?

Is electrical cable that is rated for installation underground, also capable of being laid underwater? Through a stream or across a pond? Also, please make sure to mention if it is possibly but not ...