How to weld the grounding screw of the distribution box

The most common and preferred method involves the use of a specialized green hexagonal grounding screw. This screw is designed to thread into a pre-tapped hole found in the back of most metal boxes, providing a permanent, metal-to-metal electrical bond between the EGC and the box. All QO and Homeline load centers that are marked 'Suitable for Use as Service Equipment', will come from the factory with a Green Neutral Bonding Screw, to be installed when the load center is used in a Service Entrance Application. When a load center is used as Service Equipment, the NEC requires. The National Electrical Code (NEC) lists eight specific methods to make grounding and bonding connections in Sec. Failure to install these connections properly can result in shock, fire, or, most certainly, power quality problems. Let's take a look at each one in more detail. Flexible Connection: Braided copper tape. An Intersystem Bonding Termination is a device that provides a means to connect communications systems' (twisted wire, antennas, and coaxial cable) bonding conductors to the building grounding electrode system.