# Electrical Calculations for Light Fixtures

 How to Calculate and Determine Electrical Circuit Loads for Lighting Fixtures

How to Calculate Circuit Loads and Sizes
I’m installing basement lights, how do I know how many light fixtures I can place per circuit and what size breaker do I use.

This electrical question came from: Larry, a Homeowner from Hebron, Ohio.
See more about Home Wiring for Ohio

Dave’s Reply:
Thanks for your electrical question Larry.

### How to Calculate and Determine Electrical Circuit Loads for Lighting Fixtures

• The electrical circuit calculation for light fixtures is based upon:
• The number of lights that will be installed
• The size of the lamps
• The total number of lamps.
• Once this information is determined then the lighting circuit may be sized consisting of
• the appropriate cable
• and circuit breaker.

The Following links will assist you with lighting circuits

How to Calculate an Electrical Circuit Load

• Electric Circuit Listing
• The size of the home electrical service panel is designed by calculating the square footage of the home and factoring in the code requirements for the electrical circuits that are required.
• Circuit breaker

• Electrical Wiring Protection using Circuit Breakers
• A guide to home electrical circuit breakers and how they work to protect your electrical wiring. When properly installed, your home electrical wiring is protected by a circuit protection device.
• How to Install Basement Electrical Wiring

• Basement Electrical Wiring
• Fully Explained Photos and Wiring Diagrams for Basement Electrical Wiring with Code Requirements for most new or remodel projects.For more information about Circuit Wiring
• Circuit Wiring

• Electrical Circuit Wiring
• This article looks at common 120 volt and 240 volt house wiring circuits and the circuit breakers that are installed identifying the types and amperage sizes used in most homes.
• This link is helpful as a Homeowner
• Do-It-Yourself Electrical

 » 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.

## Complete Guide to Home Electrical Wiring

Perfect for Homeowners, Students,
Handyman, Handywomen, and Electricians
Includes:
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.

## 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 UL Listed 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.