ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

>> Home   >> Electrical-Photos   >> Classifieds   >> Subscribe to Newsletter   >> Store  
 

Photo of the Week:

Mouse on a Bus
Mouse on a Bus

Advertisement:-Left
Recent Gallery Topics:
What in Tarnation?
What in Tarnation?
by timmp, September 10
Plumber meets Electrician
Plumber meets Electrician
by timmp, September 10
Who's Online Now
0 members (), 46 guests, and 23 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#222529 03/19/24 03:59 PM
Joined: Aug 2001
Posts: 335
S
Member
We have an older generator that has a frame, tires and a hitch built onto it. We pull it with a vehicle. The neutral is bonded to the frame and it has a ground wire/rod lug on the frame.
The output is through an L5-30R (3 wire twistloc) recep. We want to change to an L14-30R 4 wire twistloc.
Question: X & Y are the phases. Do we put the existing 3rd wire on the N and attach ground to the frame directly? or am I overlooking something here?

Horizontal Ad
Joined: Aug 2001
Posts: 335
S
Member
My error. It has an L6-30, not L5-30

Joined: Jul 2004
Posts: 10,007
Likes: 37
G
Member
This really gets down to how you plan to hook it up. If it is an SDS (bonding the neutral and switching the neutral in the transfer equipment) then you must leave the bonding in the generator and establish a grounding electrode. If it is not an SDS, typically using a breaker interlock, you are supposed to lift the bond in the generator. In either case, you really should be using a 4 wire feed so your plan is solid.
I don't think a 3 wire plug on a 120/240 generator was ever legal because it wasn't part of 250-60 back in the olden days (pre 96) when Phil Simmonds said the war was over. requiring 4 wires for the exceptions, ranges and dryers.
I suppose it might have used the old loophole for a feeder to a detached building logic.


Greg Fretwell
1 member likes this: tortuga
Joined: Aug 2001
Posts: 335
S
Member
Thanks. Appreciate it.

Joined: Jan 2025
Posts: 1
A
New Member
Thank you so much for the information.

Last edited by AshtonCole; 01/14/25 07:04 AM.

Link Copied to Clipboard
Advertisement:-Right


Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC + Exam Prep Study Guides Now Available!
 

Member Spotlight
RonKipperDatacom
RonKipperDatacom
Kansas City, KS
Posts: 30
Joined: January 2013
Top Posters(30 Days)
Popular Topics(Views)
340,636 Are you busy
265,950 Re: Forum
246,923 Need opinion
New Page 2
Powered by UBB.threads™ PHP Forum Software 7.7.5