Article 250 of the National Electrical Code (NEC) focuses on grounding and bonding. This Code Article is divided into 10 separate parts — each identified by a Roman numeral. Because of the terminology ...

Photo. 2. Note in the photo how the 3/0 AWG bare copper grounding electrode conductor originates from the neutral point XO and pierces through the mesh in the bottom of the transformer enclosure.

Unfortunately, these dielectric unions will break the path to ground, as discussed above. Again, place a jumper ground on the pipes before and after the new section in order to link the pipes.

To make a pigtail connection, take both ground wires and join them with a 6-inch wire of the same color that has been stripped on either end. Hold all three tightly and bind them together with a ...