ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Recent Posts
Question on power to 4 Nema 6-50 & 5 Nema 5-15.
by TrickedoutTech. 10/22/17 11:36 PM
VFD MotorFeeders
by Yoopersup. 10/22/17 07:52 PM
Generator Cable Sizing
by brsele. 10/18/17 07:39 PM
What do you do?
by gfretwell. 10/17/17 01:08 AM
Good ol' copper pipe in the fuse holder trick
by HotLine1. 10/16/17 07:16 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
241,460 Are you busy
177,455 Re: Forum
169,027 Need opinion
Who's Online Now
1 registered members (gfretwell), 44 guests, and 10 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
Page 1 of 2 1 2
#213021 - 03/07/14 10:33 PM No Way!!  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,223
SI,New Zealand
Guys,
Have a look at this install of a main breaker in a building.
I would tend to hope this failed an inspection.

[Linked Image]

Hey, at least he got the colours around the right way. rolleyes


Tools for Electricians:

#213022 - 03/07/14 10:50 PM Re: No Way!! [Re: Trumpy]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,872
Brick, NJ USA
Interesting!! Long studs to help with the alignment, & reduce the bends required in the conductor??

Why the black tape around the white(center) conductor?


John

#213023 - 03/07/14 10:50 PM Re: No Way!! [Re: Trumpy]  
mbhydro  Offline
Member
Joined: Feb 2003
Posts: 347
Winnipeg MB Canada
Saves time feeding the wire back to the bus bars.

Is that a factory wire job on the main (looks nice with the heat shrink tube) or did somebody in the field cut them to short as I have never seen a panel like that in Canada.


#213024 - 03/07/14 11:16 PM Re: No Way!! [Re: Trumpy]  
LarryC  Offline
Member
Joined: Jul 2004
Posts: 783
Winchester, NH, US
Let's see ...

Steel bolts that are smaller in diameter than the better conductors that are much larger in diameter.

Looks like three M8 steel fusable links.

grin


#213026 - 03/07/14 11:59 PM Re: No Way!! [Re: HotLine1]  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,223
SI,New Zealand
Originally Posted by HotLine1

Why the black tape around the white(center) conductor?

John,
That isn't tape, it's just a poor heatshrinking job.


#213027 - 03/08/14 12:14 AM Re: No Way!! [Re: mbhydro]  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,223
SI,New Zealand
Originally Posted by mbhydro

Is that a factory wire job on the main (looks nice with the heat shrink tube) or did somebody in the field cut them to short as I have never seen a panel like that in Canada.

What caused this to happen is the breaker should have been mounted down lower in the cabinet and then this would give you enough room to actually land the lugs onto the busbars.
It is also considered good trade practice to centre-feed your busbars here to give better current distribution along the busbar.

This sort of wire has a tonne of strands in it and is really flexible.
I'd doubt that this was a factory install, it looks more like something that "happened" on site, no QC guy would ever let an abomination like this leave the factory, if they had any credibility.

The person that did this obviously had no idea what they were doing, irregardless of the fact that (as others have stated above) you have some M8 fuses in there, but you now also have a problem with galvanic corrosion as well, due to the dissimilar metals. frown


#213031 - 03/08/14 05:40 AM Re: No Way!! [Re: Trumpy]  
gfretwell  Online Content


Member
Joined: Jul 2004
Posts: 9,124
Estero,Fl,usa
They could have made this connection just by using longer wires.

I am guessing that white is an ungrounded conductor where you are?
What is neutral?


Greg Fretwell

#213034 - 03/08/14 08:02 PM Re: No Way!! [Re: gfretwell]  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,223
SI,New Zealand
Originally Posted by gfretwell

I am guessing that white is an ungrounded conductor where you are?
What is neutral?

Greg,
Yes, White is the B phase, it used to be yellow at one time.
Neutral is Black (or light blue if it's in a flexible cord).


#213035 - 03/08/14 11:32 PM Re: No Way!! [Re: Trumpy]  
gfretwell  Online Content


Member
Joined: Jul 2004
Posts: 9,124
Estero,Fl,usa
Quote
Yes, White is the B phase ... Neutral is Black



I guess if you are upside down all the time lots of things are going to be opposite. wink


Greg Fretwell

#213036 - 03/09/14 11:13 AM Re: No Way!! [Re: Trumpy]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,872
Brick, NJ USA
Trumpy:

Is that a Siemens breaker??

And, is it common to use color code heat shrink, as opposed to conductors with colored insulation?


John

Page 1 of 2 1 2

Member Spotlight
electure
electure
Fullerton, CA USA
Posts: 4,262
Joined: December 2000
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.024s Queries: 16 (0.004s) Memory: 0.8204 MB (Peak: 1.0016 MB) Zlib enabled. Server Time: 2017-10-23 17:18:22 UTC