A long time ago someone who did home inspections taught me that if you need to check if something can electrocute you to always use the back of your hand. If it

A long time ago someone who did home inspections taught me that if you need to check if something can electrocute you to always use the back of your hand. If it is live, your arm will move away. To this day I always test with the back of my hand before changing a bulb.