Water Heater Timer Wiring? - Electrical - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical


Thread Tools Display Modes
Old 11-05-2008, 08:06 AM   #1
Join Date: Nov 2008
Posts: 1
Rewards Points: 10

Water Heater Timer Wiring?

I know a lot of people feel that water heater timers don't save much, if any, electricity, but before I researched it much I had my friend buy a timer that he found on clearance. After getting it and preparing to wire it in I found that it was a 110v timer and my water heater is of course 220v. Can someone tell or show me how to wire it in and if it will even work? I know how to do basic electrical work but I want to make sure I wire it up correctly and safely. Thanks for any help.


brentjroberts is offline   Reply With Quote
Old 11-05-2008, 11:12 AM   #2
Join Date: Jun 2007
Posts: 3,772
Rewards Points: 204

Theoretically it will work if you have a neutral present at the timer. WH's require only 240 volt circuit so there is little chance you will have a neutral. You need the neutral for the 120 volt timer motor. 240 volt timers use a 240 volt motor, and 120 volt timers use a 120 volt motor.

If you have a neutral present, you can hook the timer motor for 120 volt and use timer contacts for 240 volts. This will take some reengineering of the timer. Better to just get the right one. But yes, it can be done.


J. V. is offline   Reply With Quote
Old 11-05-2008, 01:41 PM   #3
joed's Avatar
Join Date: Mar 2005
Location: Welland, Ontario
Posts: 13,279
Rewards Points: 13,354
Blog Entries: 11

Voltage is only half the rating. What is the contact rating? If it is less than 30 amps you can't use it. The contacts will burn up.
joed is offline   Reply With Quote

Thread Tools
Display Modes

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Low hot water pressure crebive Plumbing 38 02-26-2013 12:26 AM
Installing a Tankless Water Heater infoiam Plumbing 4 11-10-2008 09:59 PM
Water Heater Troubles deadguydrew Plumbing 9 10-19-2008 09:30 AM
Water source from fridge from water heater? dankreboot Plumbing 11 07-12-2008 10:08 PM
Chimney Liner for Water Heater mruggeri001 HVAC 6 01-10-2007 06:08 AM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1