Identify The Hot Wire (Knob And Tube)

When retrofitting your house with new electric lines to old K&T wire, you need to know which wire is hot and which is neutral. How do you test for which wire is which when you don't have a fancy voltage tester tool?

Buy a basic voltage tester: https://amzn.to/2D8yQ4C

Видео Identify The Hot Wire (Knob And Tube) канала Spirit of a Handyman