ask the electrician
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.

© By:


Electrical Wiring Video



Home Electrical Wiring Videos about this Topic and More

Check out my YouTube Channel, and Subscribe!



Learn more with my Home Electrical Video Course:

Basic Home Electrical Wiring by Example

Overloading Aluminum Wiring Can Lead to a Fire Hazard
[ad#block]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.


The following may also be helpful for you:


electrical wiring book

A Complete Guide to Home Electrical Wiring

Be sure to get your copy of my BIG Book:
Perfect for Homeowners, Students and Electricians
Includes:
Home Electrical Wiring - Room by Room
120 Volt Circuits
240 Volt Circuits
Multi-Wired Circuits
Wiring Methods for Installing Home Electrical Circuit Wiring
Electrical 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.

More articles about Electrical Troubleshooting and Home Electrical Wiring:

« Previous Next »

Air Conditioner Circuit Breaker or Fuse Size

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. Dave Rongey says:

    Thank you Stephnie, the article has been updated and your comment is appreciated.
    Dave

  2. 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.