5th jaw failure modes - Electrician Talk - Professional Electrical Contractors Forum
CLICK HERE AND JOIN OUR COMMUNITY TODAY, IT'S FREE!
Go Back   Electrician Talk - Professional Electrical Contractors Forum > Electrical Forum > General Electrical Discussion


Like Tree11Likes
  • 1 Post By millelec
  • 1 Post By HackWork
  • 2 Post By millelec
  • 1 Post By HackWork
  • 1 Post By Jhellwig
  • 1 Post By micromind
  • 2 Post By MechanicalDVR
  • 2 Post By millelec
Reply
 
Thread Tools Display Modes
Old 08-05-2016, 09:09 PM   #1
Senior Member
 
Join Date: Nov 2010
Location: northern NJ
Posts: 444
Rewards Points: 508
Default 5th jaw failure modes

I'm opening up a Cutler Hammer meter stack next week. dead meter, poco inspector says meter has been dead for 2 years, and is a 5th jaw failure. evidently apartment dweller finally realized he's been getting an estimated bill for this entire time and complained to his landlord. my question to you is, what is the most common failure mode you've seen for these? I've ordered the 5th jaw kit under the somewhat dubious (and cheap) assumption it will be a simple fix, but won't know what's under there until kill the power and pull meter. is a single phase, 208 meter. PSE&G requires the 5th jaw for this application. It's a 1MM412RRL meter stack.
millelec is offline   Reply With Quote
Join Contractor Talk

Join the #1 Electrician Forum Today - It's Totally Free!

ElectricianTalk.com - Are you a Professional Electrical Contractor? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's the leading place for electricians to meet online. No homeowners asking DIY questions. Just fellow tradesmen who enjoy talking about their business, their trade, and anything else that comes up. No matter what your specialty is you'll find that ElectricianTalk.com is a great community to join. Best of all it's totally free!

Join ElectricianTalk.com - Click Here JOIN FOR FREE


Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ElectricianTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

Sponsored Links
Advertisement
 
Old 08-05-2016, 09:21 PM   #2
Sparks fly from my finger
 
Jhellwig's Avatar
 
Join Date: Jun 2014
Location: Ottumwa, Ia
Posts: 2,420
Rewards Points: 4,457
Default

From what I can tell from looking at pictures the fifth jaw is just connected to the grounded conductor. I don't see how much could fail other than the wires. That would be my guess on what to check.
__________________
Murphy's law is a pain in my butt.

Obey your Master.
Jhellwig is offline   Reply With Quote
The Following User Says Thank You to Jhellwig For This Useful Post:
millelec (08-05-2016)
Old 08-05-2016, 09:27 PM   #3
Mensa Player
 
HackWork's Avatar
 
Join Date: Oct 2009
Location: -
Posts: 33,295
Rewards Points: 1,757
Default

I've never had this issue.

I can't think of anything else that it could be that a 5th jaw kit couldn't fix.

It's either a broken or loose wire running to the neutral bus or a broken jaw. Other than that, it would have to be inside the meter itself.
HackWork is online now   Reply With Quote
The Following User Says Thank You to HackWork For This Useful Post:
millelec (08-05-2016)
Sponsored Links
Advertisement
 
Old 08-05-2016, 09:30 PM   #4
Senior Member
 
Join Date: Nov 2010
Location: northern NJ
Posts: 444
Rewards Points: 508
Default

thanks, J. Eaton's kit is really simple, unless the neutral bar connection is damaged can't imagine that it would be an ugly fix. I'm a bucket/MCC guy more than a service guy. this is a favor for someone...
millelec is offline   Reply With Quote
Old 08-05-2016, 09:33 PM   #5
Senior Member
 
Join Date: Nov 2010
Location: northern NJ
Posts: 444
Rewards Points: 508
Default

thanks Hack. Appreciate your input. PSE&G inspector gave his blessing to proceed when I called him, then followed it up with a 'stay safe'...love those moments...lol
Majewski likes this.
millelec is offline   Reply With Quote
Old 08-05-2016, 09:37 PM   #6
Mensa Player
 
HackWork's Avatar
 
Join Date: Oct 2009
Location: -
Posts: 33,295
Rewards Points: 1,757
Default

I just looked thru a few of my pictures. All the PSE&G single gang meter pans have the 5th jaw connected to the neutral via a small bus bar. The multigang meter pans have the 5th jaw connected via a small white wire that is attached to the neutral bar with a screw. This is most likely the 5th jaw kit that just comes preinstalled.

So if you have a kit made for that meter stack, I think you should be all set.
millelec likes this.
HackWork is online now   Reply With Quote
The Following User Says Thank You to HackWork For This Useful Post:
millelec (08-05-2016)
Old 08-05-2016, 09:39 PM   #7
Old Grumpy Bastard
 
MechanicalDVR's Avatar
 
Join Date: Dec 2007
Location: "Old Dominion"
Posts: 59,297
Rewards Points: 1,010
Default

Quote:
Originally Posted by HackWork View Post
I've never had this issue.

I can't think of anything else that it could be that a 5th jaw kit couldn't fix.

It's either a broken or loose wire running to the neutral bus or a broken jaw. Other than that, it would have to be inside the meter itself.
Nice answer for just anecdotal evidence!
__________________
I'm as Christian as possible in the times we live in.

Always just a stallion in a china shop
MechanicalDVR is offline   Reply With Quote
Old 08-05-2016, 09:45 PM   #8
Senior Member
 
Join Date: Nov 2010
Location: northern NJ
Posts: 444
Rewards Points: 508
Default

Quote:
Originally Posted by HackWork View Post
I just looked thru a few of my pictures. All the PSE&G single gang meter pans have the 5th jaw connected to the neutral via a small bus bar. The multigang meter pans have the 5th jaw connected via a small white wire that is attached to the neutral bar with a screw. This is most likely the 5th jaw kit that just comes preinstalled.

So if you have a kit made for that meter stack, I think you should be all set.
excellent! I like the sounds of that. thank you, Hack!
millelec is offline   Reply With Quote
Old 08-05-2016, 09:46 PM   #9
Mensa Player
 
HackWork's Avatar
 
Join Date: Oct 2009
Location: -
Posts: 33,295
Rewards Points: 1,757
Default

Quote:
Originally Posted by MechanicalDVR View Post
Nice answer for just anecdotal evidence!
That makes no sense. I wasn't providing evidence of anything.
HackWork is online now   Reply With Quote
Old 08-05-2016, 09:47 PM   #10
Old Grumpy Bastard
 
MechanicalDVR's Avatar
 
Join Date: Dec 2007
Location: "Old Dominion"
Posts: 59,297
Rewards Points: 1,010
Default

Quote:
Originally Posted by HackWork View Post
That makes no sense. I wasn't providing evidence of anything.
Okay!
__________________
I'm as Christian as possible in the times we live in.

Always just a stallion in a china shop
MechanicalDVR is offline   Reply With Quote
Old 08-21-2016, 09:21 PM   #11
Senior Member
 
Join Date: Nov 2010
Location: northern NJ
Posts: 444
Rewards Points: 508
Default

Finally got to this: 4 gang stack, the other 3 meters working fine...no 5th jaw 'failure', since not one to start with. Installed kit after pulling other meter to make sure I had right jaw setup. Easy. Also weird, in that someone threw meter in without jaw, and it never worked as a result. Estimated bill for 2 years...wow...
Attached Thumbnails
5th jaw failure modes-image_1471828516643.jpg  

5th jaw failure modes-image_1471828545213.jpg  

5th jaw failure modes-image_1471828611795.jpg  

sparkymartyKY and Majewski like this.
millelec is offline   Reply With Quote
Old 08-21-2016, 09:30 PM   #12
Mensa Player
 
HackWork's Avatar
 
Join Date: Oct 2009
Location: -
Posts: 33,295
Rewards Points: 1,757
Default

Glad it worked out.

That's the easiest 5th jaw installation I've seen yet.
millelec likes this.
HackWork is online now   Reply With Quote
The Following User Says Thank You to HackWork For This Useful Post:
millelec (08-21-2016)
Old 08-21-2016, 10:37 PM   #13
Sparks fly from my finger
 
Jhellwig's Avatar
 
Join Date: Jun 2014
Location: Ottumwa, Ia
Posts: 2,420
Rewards Points: 4,457
Default

Quote:
Originally Posted by millelec View Post
Finally got to this: 4 gang stack, the other 3 meters working fine...no 5th jaw 'failure', since not one to start with. Installed kit after pulling other meter to make sure I had right jaw setup. Easy. Also weird, in that someone threw meter in without jaw, and it never worked as a result. Estimated bill for 2 years...wow...
What's da ting wit da numberz in da secnd pic?
millelec likes this.
__________________
Murphy's law is a pain in my butt.

Obey your Master.
Jhellwig is offline   Reply With Quote
Old 08-21-2016, 11:25 PM   #14
Bilge Rat
 
Join Date: Aug 2007
Location: Fernley, Nevada (near Reno)
Posts: 6,534
Rewards Points: 2,678
Default

Quote:
Originally Posted by Jhellwig View Post
What's da ting wit da numberz in da secnd pic?
A torque screwdriver. Very similar to a torque wrench.
Jhellwig likes this.
micromind is online now   Reply With Quote
The Following User Says Thank You to micromind For This Useful Post:
Jhellwig (08-22-2016)
Old 08-22-2016, 12:50 AM   #15
Old Grumpy Bastard
 
MechanicalDVR's Avatar
 
Join Date: Dec 2007
Location: "Old Dominion"
Posts: 59,297
Rewards Points: 1,010
Default

Quote:
Originally Posted by Jhellwig View Post
What's da ting wit da numberz in da secnd pic?

He asked with total tongue in cheek....
millelec and Jhellwig like this.
__________________
I'm as Christian as possible in the times we live in.

Always just a stallion in a china shop
MechanicalDVR is offline   Reply With Quote
The Following User Says Thank You to MechanicalDVR For This Useful Post:
Jhellwig (08-22-2016)
Old 08-22-2016, 12:25 PM   #16
Sparks fly from my finger
 
Jhellwig's Avatar
 
Join Date: Jun 2014
Location: Ottumwa, Ia
Posts: 2,420
Rewards Points: 4,457
Default

Quote:
Originally Posted by micromind View Post
A torque screwdriver. Very similar to a torque wrench.
__________________
Murphy's law is a pain in my butt.

Obey your Master.
Jhellwig is offline   Reply With Quote
Old 08-25-2016, 06:42 PM   #17
Senior Member
 
Join Date: Nov 2010
Location: northern NJ
Posts: 444
Rewards Points: 508
Default

Quote:
Originally Posted by Jhellwig View Post
What's da ting wit da numberz in da secnd pic?
That's just to prove I actually had and used it, in case there was ever a question.
Save
Jhellwig and Kyrton like this.
millelec is offline   Reply With Quote
The Following User Says Thank You to millelec For This Useful Post:
Jhellwig (08-26-2016)
Old 08-26-2016, 08:56 AM   #18
Sparks fly from my finger
 
Jhellwig's Avatar
 
Join Date: Jun 2014
Location: Ottumwa, Ia
Posts: 2,420
Rewards Points: 4,457
Default

Quote:
Originally Posted by millelec View Post
That's just to prove I actually had and used it, in case there was ever a question.
Save
Wow. You are a real live unicorn then.
__________________
Murphy's law is a pain in my butt.

Obey your Master.
Jhellwig is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Epic Failure MechanicalDVR Off Topic (Non Trade) 10 07-08-2016 04:54 PM


All times are GMT -4. The time now is 06:53 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Our Pro Sites Network
ContractorTalk.com | DrywallTalk.com | HVACSite.com | PaintTalk.com | PlumbingZone.com | RoofingTalk.com