wiring a contactor on a timer

Closed Thread

  #1  
Old 10-03-14, 11:08 AM
Member
Thread Starter
Join Date: Oct 2014
Location: US
Posts: 3
Received 0 Votes on 0 Posts
wiring a contactor on a timer

I want to install a spring count down timer to turn off a electric range. I was told that I should use the timer to control a contactor that will then turn off the range.

The purpose for the timer is there is an adult disabled man living in the home and I don't want him to accidentally leave the range on.

I purchase this Eaton contactor (Mfr. Model # C25BNB240B) and this timer Intermatic timer (Mfr. Model # FD60M).

I understand the basics pretty well just not sure how to wire this up correctly so that the timer will turn off both legs of the 220 circuit.

Any help would be great.

Thanks in advance
 
Sponsored Links
  #2  
Old 10-03-14, 12:17 PM
ray2047's Avatar
Group Moderator
Join Date: Mar 2006
Location: USA
Posts: 33,597
Received 13 Votes on 11 Posts
You want to connect 240 volts to line side of the timer and the load side of the timer to the coil of the contactor.

You want to connect the two 240 leads to the line side of the contactor and the two stove 240 wires to the N/O load contacts on the contactor.

Neutral is not interrupted. No neutral to timer or contactor. Grounds connected per code.

This all must be done in a junction box.
 
  #3  
Old 10-03-14, 06:05 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 52,653
Received 340 Votes on 318 Posts
Just to reinforce what Ray wrote above. I would put a 5A fuse and fuseholder in the timer line to protect the timer and contactor coil.

Name:  cont_timer.jpg
Views: 30139
Size:  20.8 KB
 

Last edited by PJmax; 10-07-14 at 07:46 PM. Reason: updated picture
  #4  
Old 10-07-14, 12:31 PM
Member
Thread Starter
Join Date: Oct 2014
Location: US
Posts: 3
Received 0 Votes on 0 Posts
little confused

So to make sure that I got this.

The Timer LINE 1 connect to L1 supplied from breaker panel with an inline 5A fuse.
The Timer LOAD 1 goes to A2 on the Contactor.
The Contactor L1 and L2 are supplied from the breaker panel.
And L2 connects to A1 on the Contactor.
The Contactor T1 & T2 supply the range.
Neutral and Ground go directly to the range.
 
  #5  
Old 10-07-14, 07:37 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 52,653
Received 340 Votes on 318 Posts
There are only two connections on the back of the timer. There is no polarity as we are working with AC and the timer is spring wound.

Hopefully I updated the terminal markings correctly on the contactor but the timer wiring should still be self explanatory. The two A terminals on the contactor also have no polarity.
 
  #6  
Old 10-08-14, 06:31 AM
Member
Thread Starter
Join Date: Oct 2014
Location: US
Posts: 3
Received 0 Votes on 0 Posts
got it

I think I got it.

Thanks for the help,
 
  #7  
Old 10-08-14, 08:06 AM
CasualJoe's Avatar
Member
Join Date: Jan 2010
Location: USA
Posts: 9,978
Received 22 Votes on 17 Posts
Neutral and Ground go directly to the range.
You will also need a neutral connection to the coil. That is why I would prefer to use a separate 20 amp 120 volt circuit for control voltage, no fuse required. The timer is just a switch to control the relay (contactor), just run power through the timer on the way to the coil on the contactor. This isn't rocket science.
 
  #8  
Old 10-08-14, 08:23 AM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 52,653
Received 340 Votes on 318 Posts
Not correct Joe.... he spec'd out a contactor with a 240v coil.
 
  #9  
Old 10-08-14, 05:38 PM
CasualJoe's Avatar
Member
Join Date: Jan 2010
Location: USA
Posts: 9,978
Received 22 Votes on 17 Posts
Not correct Joe.... he spec'd out a contactor with a 240v coil.
You are right, I missed that.
 
  #10  
Old 10-08-14, 06:09 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 52,653
Received 340 Votes on 318 Posts
I had checked out the specs ahead of time and to make sure that the timer was also rated for high voltage.
 
  #11  
Old 09-20-16, 01:19 PM
Member
Join Date: Mar 2013
Location: usa
Posts: 19
Received 0 Votes on 0 Posts
My mother has become forgetful and left my stove on several times. This seems to be a perfect solution. The diagram is very clear, but I have one question about the metal connections on the side.

Since the side connections are a single metal piece, does it matter whether the timer wires go to the upper or lower part? In the diagram, the timer wires seem to attach to the lower part on the right side, and the upper on the left?

Does it matter?

Thanks for this solution -- I have been worried since she twice left the stove on overnight.
 
  #12  
Old 09-20-16, 10:05 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 52,653
Received 340 Votes on 318 Posts
No..... there are two slide contacts on the left side of the coil and two in the right side of the coil. The pairs are tied together.
 
  #13  
Old 09-20-16, 10:10 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 52,653
Received 340 Votes on 318 Posts
I get PM's from many members on this thread where a contactor is controlled by a timer. There are many combinations of contactors and timers that will work.

If you are trying to build something like this..... start a new thread and tells us what you want to do and we can recommend products to use.

Reference this thread in your new one.
 
Closed Thread

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes
 
Ask a Question
Question Title:
Description:
Your question will be posted in: