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Other than Brewing => The Pub => Topic started by: phillamb168 on October 04, 2013, 01:07:58 PM

Title: Wire nuts vs. screw terminals
Post by: phillamb168 on October 04, 2013, 01:07:58 PM
So I was talking about DIY the other day with a (somewhat of a) know-it-all colleague. He proceeded to tell me that wire nuts were incredibly dangerous because of 'microvibrations' that can cause fires.

The only available option here are these screw terminals:
(http://upload.wikimedia.org/wikipedia/commons/b/b7/Leuchterklemme_75dpi.jpg)

They're used for everything. In my mind they're super bulky and much less safe because they're so hard to screw down properly (jewler's flathead, for the most part).

I am pretty sure that it's just standard 'my dad told me it was bad 50 years ago, so it must still be the case,' but I'd like some ammo for the discussion.
Title: Re: Wire nuts vs. screw terminals
Post by: crandom on October 04, 2013, 01:12:45 PM
I'm an Electrician. I would say wire nuts work just fine when using solid wire. If you are using stranded wire wire nuts will also work but soldering or those terminals would be better especially if there is vibrations in your project.
Title: Re: Wire nuts vs. screw terminals
Post by: punatic on October 04, 2013, 01:51:41 PM
I've found wearing a tinfoil hat shields you from microvibrations. 

Proof?  My head has never caught on fire!
Title: Re: Wire nuts vs. screw terminals
Post by: Joe Sr. on October 04, 2013, 04:07:34 PM
I'm no electrician, but I've used wire nuts for many years.  I tend to slob them up with electricians tape, too, though.
Title: Re: Wire nuts vs. screw terminals
Post by: redbeerman on October 04, 2013, 05:30:11 PM
I'm an Electrician. I would say wire nuts work just fine when using solid wire. If you are using stranded wire wire nuts will also work but soldering or those terminals would be better especially if there is vibrations in your project.

This ^^^^^^  You can mix solid with stranded with wire nuts in a static installation, but if there is any movement, soldering is your best bet.
Title: Re: Wire nuts vs. screw terminals
Post by: MDixon on October 04, 2013, 08:24:03 PM
On my last renovation I kinda fell in love with the push in type. I would get a variety of 2s, 3s, and 4s for the wire size I had.
http://www.idealindustries.com/prodDetail.do?prodId=in-sure&div=0
http://www.amazon.com/Ideal-Multi-Colored-18-12-Connectors/dp/B00FKAJACY/ref=sr_1_15?ie=UTF8&qid=1380918034&sr=8-15&keywords=ideal+push+in+wire+connectors
http://www.lowes.com/pd_27895-12704-30-291L_0__?productId=3363860
Title: Re: Wire nuts vs. screw terminals
Post by: phillamb168 on October 04, 2013, 08:55:49 PM
I should specify, this is for an overhead pendant lamp's junction box. There will be no real vibration as the ceiling beams are 16 inches thick.
Title: Re: Wire nuts vs. screw terminals
Post by: gymrat on October 04, 2013, 09:05:10 PM
I am also an electrician. I see no problem with wire nuts. Particularly in the situation you are describing. I think wrapping up in electrical tape is a really good precaution.