ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Questioning the electrical norms
by HotLine1 - 03/04/21 12:35 PM
Lock-down Thread
by gfretwell - 03/03/21 12:38 PM
Northern Tool Recalls Powerhorse Generators
by Admin - 02/25/21 09:49 PM
You will never guess
by gfretwell - 02/25/21 07:48 PM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
0 registered members (), 16 guests, and 18 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
mobile homes #13620 09/08/02 09:31 AM
Joined: Dec 2001
Posts: 7
C
CECIL Offline OP
Junior Member
Not an electrician, but i have a question.
My son-in-law bought a new mobile home.
The service has four wires. Two wires are tied on the same terminal at both the indoor distribution box and at the sevive disconnect.
Other than to sell more wire, what is this for?

Work Gear for Electricians and the Trades
Re: mobile homes #13621 09/08/02 10:10 AM
Joined: Jul 2002
Posts: 175
E
electric-ed Offline
Member
The neutral and equipment bonding conductors should not be tied together at both ends. This could be dangerous and should be corrected by a qualified electrician.

Ed

Re: mobile homes #13622 09/08/02 10:19 AM
Joined: Dec 2001
Posts: 7
C
CECIL Offline OP
Junior Member
I've seen this on three homes.
However, I only clecked my son-in-laws system closely.
The trailer ground is tied to the neutral in the indoor distribution box.
Therefore, I don't see it's purpose.
This was connected by a licensed electrician, out of S>A>
When I ask him about it, I was told the fourth wire made no difference and was there only for insurance purposes.

Re: mobile homes #13623 09/08/02 11:33 AM
Joined: Apr 2002
Posts: 189
T
triple Offline
Member
The neutral should be bonded to the ground outside in the main panel/disconnect. Four wires should be run from that main to the panel inside the trailer. There should be no connection between ANY of the grounds (green or bare wires) and the neutrals (white wires) inside the trailer panel. The ground wire ran with the feeder should be tied to the trailer grounds as well as the panel box itself. The main neutral should connect to the trailer panel neutral bar containing the circuit neutrals. This neutral bar SHOULD NOT be bonded to the panel enclosure and thus the ground bar.

Remember, just because an electrician claims to be licensed, that does not necessarily mean that he knows what he is doing (I have worked with a number of very code ignorant licensed/certified electricians!). I would suggest having a more knowledgeable professional remedy the problem and them bill the initial electrician for his mistake. This serves two purposes. First of all, this "electrician" needs to be made responsible for the addition costs incurred by the homeowner. Secondly, the electrician needs to learn from his mistake and begin wiring future trailers correctly. All four wired subpanels need to be wired this way so this electrician is most likely miswiring all other such systems. This needs to be stopped (I sure hope this guy does not have his hands in any farm wiring! Not four wiring or four-wiring incorrect are a couple of the big issues regarding that ugly subject known as stray-voltage).

Re: mobile homes #13624 09/08/02 04:51 PM
Joined: Dec 2001
Posts: 7
C
CECIL Offline OP
Junior Member
Went back over there and took another look.
At the rear of the house, there is a #6 bare wire connecting the two halves. Then a take off that disappears in the bottom.
Inside, what I believe to be the same wire, it is tied to the ground bar.
There are two bars, one each side, connected by another bar. Which, to me, means it is all tied together.
This part is factory installed.

Re: mobile homes #13625 09/08/02 05:33 PM
Joined: Apr 2002
Posts: 914
E
Electric Eagle Offline
Member
cecil,
without seeing this in person or having lots of details and pictures, it's really hard to say if this is right or wrong. The bar that connects the equipment ground bar and the neutral bar, is it metal or plastic?
If you're unsure about this installation, and you must be or you wouldn't have posted a question about it, please call a licensed electrian for a second opinion.

Re: mobile homes #13626 09/10/02 05:56 PM
Joined: Dec 2001
Posts: 7
C
CECIL Offline OP
Junior Member
Life is good. Went back to the small town my son-in-law lives in.
Called the city inspector out. Pulled the covers off and let him look. After a long blank stare, his reply. "I am a plumber, I have no idea what I am looking at."
He is the only city inspector in town.
Called the manufacturing company, they are sending a man down Thursday.


Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

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

 

Member Spotlight
Alan Belson
Alan Belson
Mayenne N. France
Posts: 1,803
Joined: March 2005
Show All Member Profiles 
Top Posters(30 Days)
Popular Topics(Views)
275,730 Are you busy
209,645 Re: Forum
196,989 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3