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


Thread Tools Search this Thread Display Modes
Old 07-12-2012, 02:14 PM   #1
Join Date: Jul 2012
Posts: 2
Rewards Points: 10

Photo Electric Switch

I'm trying to have an outdoor fountain automatically turn off when it gets dark out and back on at daylight. This is directly opposite of how my photoelectric(PE) switch operates my flagpole light. So... How do I get the typical PE switch to work in reverse?

MNova is offline   Reply With Quote
Old 07-12-2012, 03:17 PM   #2
Join Date: Dec 2011
Location: Winston-Salem NC
Posts: 3,704
Rewards Points: 2,082

Photo Electric Switch

Originally Posted by MNova View Post
So... How do I get the typical PE (NC) switch to work in reverse?
I don't think you can.

You'll need a different switch...
either double throw or NO (vs standard NC).

TarheelTerp is online now   Reply With Quote
Old 07-12-2012, 04:10 PM   #3
Master Electrician
Join Date: Mar 2010
Location: Toronto Ontario
Posts: 1,165
Rewards Points: 500

Photo Electric Switch

I'm sure they probably make a low voltage inverter for signal wires but its probably ten times more expensive than a new cell. You could use a relay and wire it to the normally closed contact so when the cell goes off the relay opens the contact.
Sarcasm is my friend
I'm here to learn too, i do mostly commercial/industrial/new construction and this place is a great way to pick up tips on residential from some good electrical minds. Excuse the spelling, my phone has a mind of it's own.

Last edited by andrew79; 07-12-2012 at 04:43 PM.
andrew79 is offline   Reply With Quote
The Following User Says Thank You to andrew79 For This Useful Post:
Evstarr (07-12-2012)
Old 07-12-2012, 05:38 PM   #4
Semi-Pro Electro-Geek
Join Date: Jul 2009
Location: Arizona, USA
Posts: 2,559
Rewards Points: 2,014

Photo Electric Switch

I'd use a relay with normally closed contacts.
mpoulton is offline   Reply With Quote
Old 07-12-2012, 07:34 PM   #5
E2 Electrician
stickboy1375's Avatar
Join Date: Apr 2012
Location: Litchfield, CT
Posts: 5,142
Rewards Points: 2,076

Photo Electric Switch

Use a relay, oh wait, that was suggested... I'd still use a relay.
stickboy1375 is offline   Reply With Quote
Old 07-12-2012, 08:16 PM   #6
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Rewards Points: 2,000

Photo Electric Switch

Hosfelt has suitable relays with 120v coils for cheap. The relay contacts have to be suitable for your load so post your fountain pump specs.

Yoyizit is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
How to rewire outlet controlled by light switch? BuckyGunts Electrical 30 04-20-2012 03:18 PM
Electric Time Switch David Cosner Electrical 2 03-30-2011 12:15 PM
should I switch from natural gas to electric water heater supermaxhd Plumbing 24 11-28-2010 01:11 PM
Push Button Switch for Electric Motor crmays Electrical 2 02-06-2010 07:29 PM
Replacing a bathroom fan switch cmacjr22 Electrical 4 11-04-2008 07:14 PM

Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.