However having the mat and the wrist strap grounded at the same point does keep them in electrical balance.
Do i need a anti static building mat and wristband.
Just take the other necessary precautions.
I am a field tech and have never carried around a mat or strap.
There s pretty much no reason not to own one.
Dude an esd safe mat with a grounding cable and a wristband costs like 30.
This is an elastic band made of conductive fiber such as carbon or carbon filled rubber that are bounded on the hand with a stainless steel plate or clasp.
You do not need an anti static mat or wrist strap.
I am very careful though and a perfectionist so i handle each piece.
By redirecting the static these wristband devices assist in properly grounding your body balancing out any electrical charge differences between you and electrical parts.
The grounding cable is what connects the anti static mat being used as a work surface to the electrical outlet.
Here are some more details about anti static wristband.
The wristband works by redirecting the static discharge through a cord which then follows an antistatic mat or another grounded conductor to the ground.
You can buy mat spray and take care of it and use the same one for pretty much the rest of your life.
I wear one on my ankle.
The difference between using grounding cables separate for a mat or wrist strap as opposed to a common point ground is primarily ergonomic.
Make sure you have one hand or your forearm touching some metal part of the case while working.
Unless 30 40 is really gonna cause some problems you might as well own one.