Installing a programmable timer for an existing lighting system
If the new timer is to take the place of the existing system then you either need to identify that system and….
Do You Need Electrical Help?
Guide to Residential Electrical Wiring
Electrical Question about installing a new programmable timer for a lighting system
Background:Â an Electrician from Rockford Illinois
Question: Trying to add a programmable timer to an existing lighting system. Upgraded to HWCFL, went from 24,115 watts to 5,300 watts. Shut power off at breakers, probed and power is still present. The contactors are in use with the existing system. Any ideas, do I shut off at the main relay panel?
Thanks for your electrical question. There is a lot of unknown information here, but if the new timer is to take the place of the existing system then you either need to identify that system and separate out the area you want to have controlled by your new timer or just remove the control wiring to the existing lighting contactor and replace it with your control wiring. You will need to check the control voltage and the existing relay voltage and coil load etc. to make sure you stay within the limits of the new timer control circuit. If you find that you are outside of the limitations of the timer control circuit then install an additional control circuit and use relays to accomplish the control process. The drop in wattage for the HWCFL is very nice. The client will have a nice energy savings.
The Following links will assist you with your electrical question:
For more information about Circuit Breaker
This link is helpful as a Electrician
Electrical Code Articles
Make sure not to miss these Resources for: Wiring Diagrams
Be Careful and Be Safe – Never Work on Energized Circuits!
For Best Results Consult a Licensed Electrical Contractor.
Locate An Electrical Contractor in Your Area
You Can Avoid Costly Mistakes!
Here's How to Do It:
Wire It Right with the help of my Illustrated Wiring Book
Great for any Home Wiring Project.
Perfect for Homeowners, Students,
Handyman, Handywomen, and Electricians
Wiring GFCI Outlets
Wiring Home Electric Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring Light Switches
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
NEC Codes for Home Electrical Wiring
....and much more.
Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.
Electrical Tips to Help You Wire it Right
The Safest Way to Test Electrical Devices and Identify Electric Wires!
The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.
The Quickest Way to Check for Faulty Electrical Wiring!
The Plug-In Outlet Tester
This is the first tool I grab to troubleshoot a problem with outlet circuit wiring. This popular tester is also used by most inspectors to test for power and check the polarity of circuit wiring.
It detects probable improper wiring conditions in standard 110-125 VAC outlets
Provides 6 probable wiring conditions that are quick and easy to read for ultimate efficiency
Lights indicate if wiring is correct and indicator light chart is included
Tests standard 3-wire outlets
Light indicates if wiring is incorrect
Very handy and easy to use.
Strip Off Wire Insulation without Nicking and Damaging the Electric Wire!
The Wire Stripper and Wire Cutter
My absolute favorite wire stripping tool that I have had in my personal electrical tool pouch for years, and this is the tool I use to safely strip electrical wires.
This handy tool has multiple uses:
The wire gauges are shown on the side of the tool so you know which slot to use for stripping insulation.
The end of the tool can be used to grip and bend wire which is handy for attaching wire onto the screw terminals of switches and outlets..
The wire stripper will work on both solid and stranded wire. This tool is Very Handy and Easy to Use.