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#86610 - 11/17/03 10:32 AM Push In Terminals versus Screw Terminations?  
Joe Tedesco  Offline
Member
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA
It has been brought to my attention that most EC's will use the push in terminals for plug and switches, instead of terminating conductors around the device screws.

What's your opinion?


Joe Tedesco, NEC Consultant

2017 / 2014 NEC & Related Books and Study Guides

#86611 - 11/17/03 12:08 PM Re: Push In Terminals versus Screw Terminations?  
ThinkGood  Offline
Member
Joined: Aug 2002
Posts: 1,081
Milwaukee, WI
I am not an EC.

I have personally seen the effects of push-in terminated devices. (Some of my photos are posted on the board.)

If there is a screw that is used to tighten the connection, such as with the GFCI receptacles (the ones that have a back-stab hole but require the screw to tighten the connection), I don't see a problem.

If one is relying on a spring type of connection, then I would not trust it.

I have also found that the screws provided in some of the cheaper devices are almost as soft as the copper, and are not very sturdy.

If I understand correctly, 12AWG can no longer be used with push-in connections, right? Why is 14AWG permitted and not 12?...


#86612 - 11/17/03 12:33 PM Re: Push In Terminals versus Screw Terminations?  
mvrandazzo  Offline
Member
Joined: May 2002
Posts: 110
I have done it both ways in the past. And I have to be honest, I have yet to run across a push-in connection that has failed when properly installed. Not to say that it doesn't happen. I have read about others who run across this all the time. I have seen numerous, and I will repeat NUMEROUS, recepticles that failed when the connection came loose from the screw. I have at times used the push-in connection (on 14 awg only) when pigtailing the circuit. I can only assume that the integrety of the connection lies in the ability of the installer. Also, if the device is overloaded the push-in or screw connection will fail. On the cheaper devices they loose tention and overheat with time. Many times I change all the devices in a home because they can't keep anything plugged in. I guess quality lies with the installer.

Blessings,
Mark


#86613 - 11/17/03 05:28 PM Re: Push In Terminals versus Screw Terminations?  
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
I never use a "pushin connection", but do use the back wired devices where the screw clamps a pressure plate against the wire.
Don


Don(resqcapt19)

#86614 - 11/17/03 06:13 PM Re: Push In Terminals versus Screw Terminations?  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Unless it is the type Don describes I will not use them.

About the only place I have ever used the spring type is on a switch as I will know that the current load is low.


Bob Badger
Construction & Maintenance Electrician
Massachusetts

#86615 - 11/17/03 08:25 PM Re: Push In Terminals versus Screw Terminations?  
txsparky  Offline
Member
Joined: May 2001
Posts: 552
Magnolia,.Texas U.S.A.
I use the screws! I have spent too many hours on service calls troubleshooting loose connections on backstabbed devices.I have also seen the scorched walls and burnt insulation on the wiring from these faulty connections. [Linked Image] My opinion...If the difference in time between backstabbing a device or using the screws, is going to make or break the job, you bid it too low to begin with.


Donnie

#86616 - 11/17/03 10:49 PM Re: Push In Terminals versus Screw Terminations?  
electricman2  Offline
Member
Joined: Nov 2003
Posts: 269
Thomasville, NC USA
The first thing I look for when I get a complaint about no power on a receptacle or a loss of power on a branch circuit is a loose backstabbed connection. 99% of the time I'm right. It was worse before the restriction on wire size to #14, but I always use the terminal screw.

John


John

#86617 - 11/17/03 11:11 PM Re: Push In Terminals versus Screw Terminations?  
ga.sparky56  Offline
Member
Joined: Nov 2002
Posts: 558
young harris georgia usa
I too use the screws.I've seen several backstabs cause problems.

It doesn't take much more time when you do a few jobs that way.

Russell


#86618 - 11/18/03 07:26 AM Re: Push In Terminals versus Screw Terminations?  
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,311
I would personally like to thank UL for the continued buisiness i recieve from thier blatant inepptitude

carry on fellas!

~S~


#86619 - 11/18/03 09:01 AM Re: Push In Terminals versus Screw Terminations?  
Joe Tedesco  Offline
Member
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA
Look here!

[Linked Image]


Joe Tedesco, NEC Consultant

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