Is A Grounding Electrode Conductor Ever Permitted To Be Smaller Than The Main Bonding Jumper? Main and equipment bonding jumpers shall be of copper or other corrosion-resistant material. … (d) Size — Equipment Bonding Jumper on Supply Side of Service and Main Bonding Jumper. The bonding jumper shall not be smaller than the sizes shown
What Determines The Size Of The Equipment Grounding Conductor? It is sized based upon Section 250-122 and Table 250-122. In other words, the size of the equipment grounding conductor is based upon the rating or setting of automatic overcurrent protective device in the circuit ahead of the electrical appliance or equipment. Where do you find
What Is The Largest Size Copper Grounding Electrode Conductor Required By The NEC? Looking at Table 250.66, we see that the largest size copper grounding conductor is 3/0 AWG. What size AWG copper grounding electrode conductor is needed for ground rods? A 2 AWG copper conductor satisfies the requirement for a ground ring where the