Klein Voltage Tester - https://amzn.to/3yYjzh8
I recently purchased an investment property that originally had old knob and tube wiring but now has a hybrid of an updated electrical panel, romex, and the rest of the wiring is the original knob and tube.  I will show you an example of a switch failure that could have very easily led to a fire and what you need to be aware of if purchasing or investing in old homes with corresponding old electrical systems.

Tools Every Weekend Warrior Needs
Makita Corless Drill Combo Kit:  https://amzn.to/2Jsw78j
Dewalt Drill Bit Set:  https://amzn.to/2w0xAA4
Dewalt Screwdriver Bit Set:  https://amzn.to/2UqTvK9
Craftsman Screwdriver Set: https://amzn.to/3bAsNEG
Eklind Allen Wrench Set:  https://amzn.to/2wKDu8M
Pliers (4-Piece Set):  https://amzn.to/2JlYUM7
Milwaukee Fastback Utility Knife:  https://amzn.to/2WFZOgt
Stanley Tape Measure:  https://amzn.to/2WPzr5K
Studbuddy Stud Finder:  https://amzn.to/38MdzfV
Johnson Torpedo Level:  https://amzn.to/3dzx5Ot
Stanley Hammer:  https://amzn.to/39tudPL
Buck Bros Wood Chisel Set:  https://amzn.to/2QTebYO
Klein Voltage Tester: https://amzn.to/3yYjzh8
Klein Outlet Tester:  https://amzn.to/39GyO33
Milwaukee Wire Strippers: https://amzn.to/2Z1jH2J
Little Giant Ladder: https://amzn.to/2UrFmfG

DISCLAIMER: This video and description contain affiliate links, which means that if you click on one of the product links, I’ll receive a small commission.