Threadless couplings
These threadless couplings for copper-coated ground rods securely connect any manufacturers' rods that are made to the design parameters of the ANSI-approved/NEMA GR-1 ground rod specification. Made from bronze alloy, the couplings are available in ½ in., 5/8 in., and ¾ in. sizes. According to the company, the products work by creating a compression joint without splitting or cracking when the rods are driven. Once connected, the force required to pull the rods apart from this joint is more than 1,500 lb.
Galvan Industries
For more information, visit www.galvanelectrical.com.