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Why Did my Puck Lights Stop Working?

Why did my under cabinet puck lights stop working? Troubleshooting a Puck Light Problem.

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Puck Light Problem
Electrical Question: Why did my under cabinet puck lights stop working?

My electrical wiring project involves Lost All Power a Puck Light in the Kitchen of a Old Home.

This electrical wiring question came from Carol, a Homeowner in Newcastle, Canada.

Dave’s Reply:
Thanks for your electrical wiring question Carol.

Lost Power to all Puck Lights

Application: Lost Power to Puck Lights.
Skill Level: Intermediate to Advanced – Best performed by a Licensed Electrical Contractor, or Certified Electrician.
Electrical Tools Required: Basic Electricians Pouch Hand Tools, Voltage Tester, and appropriate Safety Gear.
Estimated Time: Depends on the personal level experience, ability to work with tools, install electrical circuit wiring, and the available access to the project area.
Electrical Safety: Identify the electrical power source to the Puck Light, turn it OFF and Tag with a Note before working with the electrical wiring.
Electrical Wiring Parts and Materials: Electrical parts and materials for the Puck Light should be approved for the specific project and compliant with local and national electrical codes.
Electrical Codes and Inspections: Installing or changing home electrical wiring should be done according to local and national electrical codes as adopted in Newcastle, Canada. A permit and inspections may also be required.
Resources to help you do electrical wiring in your area:
Locate Electricians or Electrical Contractors in Canada
Canada Electrical Contractor License, Building Permits and Electrical Codes

Troubleshooting a Under Cabinet Puck Light Problem

This electrical wiring project is about a kitchen area that lost all power to the Puck Lights in the Kitchen of a Old Home.

Puck Light Power Supply

There are several types and brands of Puck Light Fixtures. Many Puck Lights are low voltage, therefore the lights are typically connected to a low voltage power supply. This has been the case when I have installed several Puck Lights made by the WAC Lighting Company. In any case, it is possible that the power supply for your Puck Lights has stopped working. If this is true then the power supply will need to be replaced. Now the next question will be Where is the power supply? Typically, the power supply is installed somewhere around the under cabinet unit, unless your Puck Lights have the power supply built in with the Puck Light Fixture assembly. In that case you will need to see if the power supply is accessible and if it can be replaced. If your Puck Light power supply is not accessible as it is part of one unit, then the entire fixture assembly may need to be replaced.


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Complete listing of electrical wire types and parts used for home projects with electrical code information serves as selection guidelines.

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Electrical Junction Boxes for Home Wiring

Understanding electrical junction boxes and what they are used for. Home electrical wiring is the process of installing electrical wire to a location that will serve electrical devices or an appliance. One very important component is the box where the wire will be installed. The type and size of the home wiring electrical boxes will depend upon the circuit size, application and its location.

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Kitchen Electrical Wiring

Fully Explained Photos and Wiring Diagrams for Kitchen Electrical Wiring with Code Requirements for most new or remodel projects.

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Installing Under Cabinet Lights

Installing under cabinet lights for your home electrical improvements. This article explains installing under cabinet lights and the lighting features you should know about.

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Complete Guide to Home Electrical Wiring

Perfect for Homeowners, Students,
Handyman, Handy Women, 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.

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