ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
12 Lead Motor Connection Weird
by emolatur - 01/19/22 02:40 PM
Any women electricians here?
by gfretwell - 01/17/22 01:44 PM
Well There's your problem.
by gfretwell - 01/08/22 12:17 AM
Happy New Year!!
by HotLine1 - 01/04/22 09:50 AM
Sangamo s309.2
by Robski - 12/31/21 04:54 PM
New in the Gallery:
240/208 to a house
240/208 to a house
by wa2ise, October 9
Now you know.
Now you know.
by Tom_Horne, September 7
Who's Online Now
0 members (), 6 guests, and 14 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Oct 2000
Posts: 3,669
Likes: 2
Admin Offline OP
Administrator
Member
Quote
This industrial establishment needed a receptacle for some of their equipment.

The breaker in the panel serves the pigtail- which exits the panel through the large opening, and just sort of "hangs" there. Should the door be closed, the next guy gets to "fish" it off the bussbars.

- renosteinke
[Linked Image]

Joined: Feb 2005
Posts: 219
S
Member
This is a good find. Is there a "Best Violation" contest? Here is a candidate!

Rob

Joined: Feb 2005
Posts: 219
S
Member
It looks as though the cord is Main Lugged with no protection.

Rob

Joined: Jan 2005
Posts: 5,316
Cat Servant
Member
Yes, Rob, it does LOOK that way...but it does terminate at one of the two breakers that you see. (The other serves the receptacle next to the panel)
What is also misleading is that, while this plug may look like a 240v "dryer" cord, it is not; it is a non-NEMA 125v/30a pattern used by the RV industry.

So, the breakers are a single 1-pole, 20 amp and a single 1-pole 30 amp.

Joined: Jul 2002
Posts: 8,412
Likes: 3
Member
Just a little side-note guys.
I don't know, over the time that I've been here at ECNet, how many times I've seen plugs hanging half-way out of recepts!. [Linked Image]
Surely it must be a violation of some sort to have the plug, bear the weight of a heavy cord?.
I'm not sure how long the pins are on these plugs, but wouldn't it cause burning of the mating contacts when current is drawn through the cord?.
This sort of thing sort of winds me up a tad. [Linked Image]

Joined: Jan 2005
Posts: 5,316
Cat Servant
Member
Trumpy,

You are right to worry about half-out plugs. As far as I can remember, these were the sorts of things always used as examples of how home fires start.

If a plug is just barely making contact with the receptacle, and there is a sizeable load on it, the plug prongs can get red-hot. As you might guess, this sort of heat will cause the wire insulation in the cord, the receptacle, and the wires in the box to degrade, and eventually fail.

Just the sort of thing the AFCI was originally claimed to protect us from.....but that's another story.

One of the big differences between a quality device, and a residential one, is the amount of tension in the springs that hold the plug in. All devices will weaken eventually- but if a receptacle is used frequently, or is expected to hold against the weight of a substantial cord, getting a better device to start with makes sense.

Joined: Sep 2002
Posts: 917
Likes: 1
N
Member
On a minor note, see a BR circuit breaker in a I-T-E panel.


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
dougwells
dougwells
kamloops BC Canada
Posts: 1,157
Joined: May 2003
Top Posters(30 Days)
NORCAL 3
Popular Topics(Views)
287,941 Are you busy
220,081 Re: Forum
206,077 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5