Why a good ground is important

[squonk 46,324]

Restoring a tractor? Painting an engine? Watch this video on why you need to have clean metal (no paint) for your grounds and how it effects engine cranking, 

 

 

[ri702bill 12,005]

The electric engine fan on our old 1989 Old Cutlass Ciera stopped working. It would always come on when the AC was switched on, but no more. Jump the connector & it works fine....

There was a long threaded stud on the lower front of the engine with about 4 stacked ground wires, a washer & nut. Ahha - it was a fuzzy white color, not shiny metal. disassembled the stack, cleaned both sides of all the lugs & mount, and reassembled. A good smear of dielectric grease over them, ploblem solved... Looks like it was a poor choice in the ground location, open to road splash.

[953 nut 65,688]

Unfortunately many people do not understand that an electrical circuit needs a return path to work. Electrons can't just flow out (potential energy) and do work, they need to go through the device (light, motor, etc.) and back to the battery to do work.

Edited 1 hour ago by 953 nut

[oldlineman 1,687]

That is the whole reason for Insulate and Isolate when we work safely on AC circuits. One of the first things we learned as apprentices.  

[pfrederi 20,411]

You can trust your mother not your ground....