Safety & diagnosis — sizing guideline

Arc Fault Risk Checker

A rough read on your arc fault risk based on your home's age and wiring — arc faults are a leading cause of electrical fires, and older homes without AFCI protection carry more of this risk.

1. Your Home

Approximate home age

Do you have AFCI breakers?

Home has aluminum branch wiring (common 1965–1975)

Home has any knob-and-tube wiring remaining

You've noticed flickering, buzzing, or warm outlets/switches

2. Risk Read

Pattern-based read

Result:

Answer the questions to see your risk read.

What arc faults actually are

An arc fault is unintended electrical arcing — sparking — from a loose connection, damaged insulation, or a nicked wire (like from a nail or staple).
Arcing generates intense localized heat, which is why it's a leading cause of electrical fires, particularly in older wiring.
AFCI breakers are specifically designed to detect the electrical signature of arcing and trip before it becomes a fire — standard breakers don't catch this.