Static Ground testing
I have had someone ask about static ground testing and proper grounding procedures.
Ground wire sizes are usually about 20 to 26 gauge stranded wire for the leads of grounding for personal protection such as wrist straps and table mats.
Below are two pictures of testing the ground path using a simple but slightly expensive Fluke Multimeter.
CAUTION: Never test for ground in either slotted hole of an outlet, always test in the gorund hole. Slotted holes are hot or neutral and meter damage or personal injury may result. Always use Ohms to test resistance and only in round hole of North American outlets.
Note position of test leads and reading. Very small resistance for direct ground from alligator clip of static ground lead to ground of outlet. I also test to another outlet not in the same circuit as this one to make sure outlets are properly grounded.
I am testing the ground path here with static lead to the end of the lead to ensure protective resistor is there. One megaohm resistor works just like a fuse for protection of person if you are using lead for a personal wrist strap. Resistor will blow open causing an open circuit if any voltage is applied to circuit, ensuring voltage does not reach human on end of wrist strap.