Answer:
What it is you are welding
Step-by-step explanation:
If vertical welding, place above weld as a general rule.
Clean the metal you place the clamp on.
When connecting clamp, most machines work better when the cable is facing up unless stated otherwise.
Never ground on a stool in which you intend to sit.
Ground as close to the weld as possible.
Never put stinger on the ground clamp.