ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Grounding electrodes
by gfretwell - 09/07/21 03:41 PM
Looking For Electricians in the Midlands
by Alex247 - 09/06/21 05:26 AM
Backup Generator Done Right
by timmp - 08/31/21 04:44 PM
New in the Gallery:
Now you know.
Now you know.
by Tom_Horne, September 7
February, North East Indiana
February, North East Indiana
by timmp, July 25
Who's Online Now
2 members (Scott35, gfretwell), 35 guests, and 14 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#198868 02/06/11 03:32 PM
Joined: May 2003
Posts: 1,157
Member
I am doing a small kitchen renovation was called in at the last minute. when the house was originally build there was a cook top and a wall oven.

Apparently the wall oven quit working and a past owner took out the original cook top and put in a free standing range. now the customer has bought a new wall oven and a cook top. I have not seen the name plate rating on the wall oven yet, but the cook top is rated at 7.9 kw . the existing feeder is # 10 and I have not found the splice JB yet for where they tapped off for the wall oven and cook top.

the circuit feed this system is 40 amps on # 8 romex from the panel. My question is will this suffice for the new cooking equipment.

I understand the question mikish posted for the free standing range, but i will have to look for this system set up in the code, The customer assumed that we could use the existing set up And I know i will have to find the nameplate rating g on the wall oven. Has anyone else ran into this.

Joined: Jun 2004
Posts: 1,273
T
Member
My home has exactly that set up.

Our junction box is behind the wall oven. You should expect the same.

When our oven went out I performed a board-level soldering repair.

I know it's hard to believe, but full voltage, full amperage juice is sent across common solder junctions for control purposes. This is where the failures occur.

I believe that such circuits are an industry norm.

My stove top uses a #8 tap from the home-run junction box -- for what it's worth.


Tesla
Joined: May 2003
Posts: 1,157
Member
I haven't seen the name plate rating of the wall oven yet but the original wiring to the cook top was # 10 , the new cook top is rated at 7.9 kw that would put it at about 32 amps.

Joined: May 2003
Posts: 1,157
Member
Our code says that both appliances can be treated as one appliance if that helps.

Joined: May 2003
Posts: 1,157
Member
Oven says 3.4 KW I thought an oven would take more smile

Joined: Mar 2004
Posts: 947
T
twh Offline
Member
The taps need to be sized for the load.

What does the code say about the size of wire and overcurrent for a range of this size?

Joined: Jun 2006
Posts: 613
M
Member
8-300(2)
says the two units are allowed to be considered as 1 range. So if a total of 12000 wats is not exceeded then the rating is 8000 watts per 8-300(1)

Joined: May 2003
Posts: 1,157
Member
Thanks mikish I read that rule the other day. smile

Joined: Jun 2007
Posts: 106
M
Member
Quote
Our junction box is behind the wall oven. You should expect the same.


Would this not make the JB in-accesible if it is located behind the wall oven?

Last edited by Trumpy; 02/10/11 01:57 AM.

Never trust an electrician with no eyebrows!!
Joined: Jun 2006
Posts: 613
M
Member
The JB located behind the oven is accessable but only by removing the oven. I would reject that location in favour of the area at the back of a cabinet or between the drawer and cabinet below the oven. The requirment for accessible does not say easily or readily so it is not a violation of the literal text. You might win that agrgument with an inspector but regardless it is a bad location. It also would have required extra cable to allow for the connection to the oven before sliding it into the space for the oven. Too much bending for an old guy


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
JoeKP
JoeKP
Berkley, MA
Posts: 144
Joined: March 2008
Top Posters(30 Days)
timmp 3
Popular Topics(Views)
282,898 Are you busy
216,663 Re: Forum
203,095 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5