Electrical Panel Grounding Requirements

Grounding requirements for electric panels.

Electrical panel grounding requirements.

The rest of article 250 covers how to achieve this desired level of protection. Grounding of the electrical service at the main water line must be within the first 5 of water piping into the building. To make the connection slide the end of the grounding electrode conductor through one of the holes in the bus and tighten the screw in that hole until it holds the wire very tightly. Grounding of services grounding shall consist of a continuous grounding electrode conductor run from the panel to a ground rod grounding electrode and to the cold water pipe.

When grounding an electrical panel the following applies. National electrical codes nec 250 5 grounding and bonding grounding and bonding electrodes include a metal underground water pipe in direct contact with earth for 10 feet or more a metal frame of a building or structure a concrete encased electrode or a ground ring nec 250 28 grounding and bonding grounding and bonding a main bonding jumper or the green bonding screw provided by the panel. Although the piping system is bonded to the ground through your main electrical service panel the panel grounding and the piping bonding are unrelated when it comes to function. Connect the grounding electrode conductor to the ground bus.

We are the premier electrical grounding and electrical safety consulting firm in the usa. Because the panel must be connected to the ground rod by a buried copper wire. 310 798 1038 e s grounding solutions 703 pier avenue suite b174 hermosa beach ca 90254. The ground bus is where all the ground and neutral wires are attached in the electrical panel.

Second the main electrical panel must be grounded to a grounding electrode such as a ground rod or rods driven into the earth near the foundation of your house. Similar to the purpose statement of the nec we are given guidance toward the intended results and then a set of rules to follow. This question did not state if the ge 125 amp panel is a main panel or a sub panel which makes a very big difference with the grounding method as outlined below. Grounding bonding 2 in our example the service equipment for the home is the 200 amp main breaker panel.

Section 250 4 lays out the performance requirements of grounding and bonding electrical systems.