ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
by gfretwell. 03/24/18 02:10 AM
Recall Notice Kidde Smoke Alarms
by dougwells. 03/22/18 01:40 PM
Recall notice: Southwire wi-fi wall switches
by sparkyinak. 03/15/18 06:03 PM
Goodman Manufacturing Recalls Modular Blowers
by Admin. 03/13/18 10:40 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 11 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Generator interface #183123
12/27/08 02:50 PM
12/27/08 02:50 PM
leland  Offline OP
Joined: Aug 2007
Posts: 853
Lowell area, Ma. USA
I hope all are haveing a great Holiday season! The best for the New Year!

Now, After the rash of bad weather here and the power outages, I've had a lot of calls for The manual transfers for Portable Generators.I use 10 ckt panels.
Most are straight forward- Prewired nippled to the panel-10/3 to the garage and an outside box.
Yesterday I ran across an elderly lady who does not want to go to the basement to turn them on.
So my thought is to place the switch in the garage.
How ever this would require 20 12s' in conduit (switch legs)Up the neutral to #8.
As most will know the prewired (240/120-30A)comes with a flex,20 leads and #10 neutral and ground.
IMO, this would be just an extension of the factory set up,But still makes me question my thoughts.
Any ideas? confirmations,or potential problems?
Tanx, Lee

Last edited by leland; 12/27/08 02:51 PM.
Work Gear for Electricians and the Trades
Re: Generator interface [Re: leland] #183128
12/27/08 03:38 PM
12/27/08 03:38 PM
sparkyinak  Offline
Joined: Jul 2007
Posts: 1,329
First question, are you under the 2008 NEC?

"Live Awesome!" - Kevin Carosa
Re: Generator interface [Re: sparkyinak] #183131
12/27/08 04:11 PM
12/27/08 04:11 PM
leland  Offline OP
Joined: Aug 2007
Posts: 853
Lowell area, Ma. USA

Re: Generator interface [Re: leland] #183132
12/27/08 06:19 PM
12/27/08 06:19 PM
renosteinke  Offline
Cat Servant
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
You don't have a lot of room within the transfer switch enclosure, nor is there much space under the screws / clamps that the wires attach to.

I would suggest mounting a fairly large can, or even a small gutter, near the transfer switch. I'd then terminate the wires to a terminal stirp, and connect the "extension wires" there. I'd rather do this than use wire nuts.

Though ... all considered .... 10 circuits is a fairly large number, and with the matter of convenience added in ... perhaps we would be better served by re-doing the arrangement completely, perhaps with a sub-panel and an automatic transfer switch.

It comes down to the "cheap-good-fast" riddle. The original was cheap and fast, but not that good. There's no way around that!

Re: Generator interface [Re: renosteinke] #183136
12/27/08 10:21 PM
12/27/08 10:21 PM
leland  Offline OP
Joined: Aug 2007
Posts: 853
Lowell area, Ma. USA

Similar to this.
All self contained. in that whip is a #10 neutral and ground.10 ckt switch legs.
The generator plugs into the front.
Red wires to breaker and black wires to load. Very slick set up. Neutral to the N buss and ground of course.
typically loads are spliced in the panel. This application I was thinking about moving this T-switch to the garage,Effectively just extending the switch legs.
Terminal strip is in order,Yes.

Last edited by leland; 12/27/08 10:22 PM.


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


Member Spotlight
Nicholson Ga
Posts: 34
Joined: June 2006
Show All Member Profiles 
Top Posters(30 Days)
Trumpy 5
Admin 4
Popular Topics(Views)
244,891 Are you busy
182,004 Re: Forum
172,034 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.021s Queries: 15 (0.004s) Memory: 0.9684 MB (Peak: 1.1076 MB) Zlib enabled. Server Time: 2018-03-24 19:21:38 UTC