Electrician Training Electrical Certification wiring recessed light fixtures Electrical Wiring Electrical Troubleshooting and Electrical Repairs wire outdoor light fixture Home Electrical Wiring Diagrams
wiring home generator and transfer switch wiring a 220 volt range cord outlet Wiring for GFCI Outlets Wiring Outlets and a Switched Outlet Wiring and Installing Ceiling Fans and Remote Controls wire dimmer switch wiring diagrams for switches wiring a dryer cord and 220 outlet circuit breaker panel
Electrical Wire and Cable


When Aluminum Wiring Becomes a Real Fire Hazard

Can you replace a 15 amp circuit breaker with a 20 amp circuit breaker if the wire is 12 gauge and it’s protected by a 15 amp fuse at the load? The Dangers of Aluminum Wiring and an Incorrect Circuit Breaker Size Can Lead to a Fire Hazard.


Overloading Aluminum Wiring Can Lead to a Fire Hazard
Electrical  Question: Can you replace a 15 amp circuit breaker with a 20 amp circuit breaker if the wire is 12 gauge and it’s protected by a 15 amp fuse at the load?

My air conditioner went out. The repair guy traced it to a bad Bryant BD 15-20 breaker. He only had 20-20 & used that saying since there was a 15A fuse at the AC unit it was OK. The house was built in 1972 and has aluminum wiring. He used Noalox  on the connections.

This home electrical repairs question came from: Bob, from San Ramon, California.

See more about Home Electrical Repairs for California

Dave’s Reply:
Thanks for your electrical troubleshooting question Bob.

The Dangers of Aluminum Wiring

Incorrect Circuit Breaker Size Can Lead to a Fire Hazard

More about Home Electrical Wiring

Electrical Circuit Wiring
Circuit Wiring

Identifying 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.

Home Electrical Circuit Breakers
2-pole-circuit-breaker

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.

Guide to Home Electrical Wire
electrical-wire

Electrical Wire for the Home

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

Repairing Electrical Wiring
Repairing Electrical Wiring

Repairing Electrical Wiring

Electrical Splices – Part 1 – Emergency electrical wiring repairs should be made using the right materials for your particular application. Here are a few choices to help you decide what you’ll need.


» 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.


  electrical wiring  

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.

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 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.

« How to Know if your AC Circuit Breaker or Fuse is Correct Why Light Switches May Not Be Working »


FAQs Frequently Asked Questions and Comments

2 Responses to “When Aluminum Wiring Becomes a Real Fire Hazard”
  1. Stephnie says:

    I just wanted to let you know that there is a typo on the answer above (aluminum wire to air conditioner) that states “A #20 gauge aluminum wire is rated for no more than 15 amps” which should say a #12 gauge aluminum wire. Just don’t want anyone to get confused.

COMMENTS and QUICK QUESTIONS:

If you are asking a Quick Question please make sure it is about This TOPIC:
“When Aluminum Wiring Becomes a Real Fire Hazard”

Comments Posted here are Open for Quality Discussion and Participation.
PLEASE NOTE: WE DO NOT PUBLISH 3RD PARTY SPAM COMMENTS, TRACK-BACKS OR LINKS.



By submitting you agree to our Site Terms