Join Date: Dec 2018
Location: Northern Virginia
Simple PVC Static Discharge
I installed my central dust collection with PVC for several reasons, cost, ease of installation, future modification. I had previous experience with the static electricity build up when using any plastic type duct or hose. I looked at existing grounding systems available for purchase and home made systems. They were unattractive, difficult to install and rather expensive. I found a very simple and easy solution. Using aluminum foil duct seal tape, I adhered strips to the duct work while folding 1/3 of the strip back under its self to place the aluminum in direct contact with the exterior of the PVC. I then ran a second strip over the now 2/3 wide strip fully securing it to the PVC. You may have success just adhering the tape directly to the PVC, but I was uncertain about the rather thick adhesive interfering with the connectivity. I ensured I had continuous runs over all PVC duct, then attached an electrical eye connector and wire to the end of the tape near a grounding source. The other end of the wire is connected to the ground. I conducted multiple tests using various chip/dust particle sizes (MDF dust included) and have found the system is completely discharging all static.
The idea that you have to penetrate the PVC with connectors to capture the static charge is not correct. All that is necessary is to provide a discharge pathway that offers less resistance than the PVC.
Total cost, 1 large roll of aluminum foil tape, about $9. Installation time, 1 hour. (I connected all flex hoses internal wire frame to the system as well and they remain static free and very clean on the exterior.
I will try to upload some pictures tomorrow, but most the tape is out of sight.
"Whether you think you can, or you can't, you're right." -Henry Ford