ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Square D "All-In-One" Panelboard
by NORCAL - 11/30/21 12:48 PM
Where is Everyone?
by luckyshadow - 11/21/21 10:14 AM
It's been an interesting career
by The Watt Doctor - 11/19/21 09:56 AM
Well I am back to stay (nearly 6 years)
by The Watt Doctor - 11/19/21 09:17 AM
Motor Load Relationships Between Fans and Pumps
by The Watt Doctor - 11/18/21 09:24 AM
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
1 members (Scott35), 48 guests, and 19 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#203327 09/21/11 08:18 PM
Joined: Aug 2006
Posts: 356
Niko Offline OP
Member
I am planning on installing a manual transfer switch (200A) for a standby residential generator. The transfer switch will be immediately after the main 200Amp disconnect. My question is do i need to have a fused or non-fused transfer switch. Please provide NEC reference so i will learn and know for future.

Thanks for the replies


Be kind to your neighbor, he knows where you live

2017 / 2014 NEC & Related Books and Study Guides
Joined: Jul 2007
Posts: 1,335
S
Member
It will have alot to do with which code revision you are under and local code. I'm out of the office and way from me code books as long as you wire the switch as a 200 and switch all the way through you generator panel then I don't see a need for additional OCPD's. It's protected.

A little side note with my inspector cap on, its my humble opinion even though it sounds like you are just doing an add on, it has to meet current code. I do belive in the 2008 cycle requires an automatic switch, not manual


"Live Awesome!" - Kevin Carosa
Joined: Aug 2006
Posts: 356
Niko Offline OP
Member
We are under the 2008 NEC and it seems Manual switch is allowed. The main service is 200Amps but the portable generator is rated at 50Amps. I am installing 200Amp switch for future capability.


Be kind to your neighbor, he knows where you live

Joined: Nov 2007
Posts: 763
K
Member
If itís a 200A transfer switch on the load side of the 200A service disconnecting means, I donít see why it would need to be fused, especially if its service rated and sized for the full load.
I donít see anything the NEC that would require it either and I have never been required to install a fused transfer switch on a residence before. The generators Iíve installed all had their own built in OCP, which was rated lower than the maximum rating of the transfer switch.

Joined: Apr 2002
Posts: 7,283
Likes: 3
Member
Niko:

Ditto to what Kjay said above. OCP before xfr switch & full rated & service rated...no issues.



John
Joined: Aug 2006
Posts: 356
Niko Offline OP
Member
I appreciate your replies.

Learning never exhausts the mind.


Be kind to your neighbor, he knows where you live


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
mxslick
mxslick
Atomic City, ID USA
Posts: 806
Joined: October 2004
Top Posters(30 Days)
Admin 3
dsk 2
Popular Topics(Views)
286,451 Are you busy
218,868 Re: Forum
204,978 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5