sparkyguy545
Member
Historically, various GEC's are shown in reference books as terminated on Neutral Bar, then the Neutral is bonded to Ground through the Main Bonding Jumper. Why? The reverse would seem to make more sense.
GEC Point-of Connection
- Thread starter sparkyguy545
- Start date
- Status
- Location
- Connecticut
- Occupation
- Engineer
That is what the wording of the code requires:
250.24(A) "shall have a grounding electrode conductor connected to the grounded service conductor..."
250.24(B) "and unspliced main bonding jumper shall be used to connect the equipment grounding conductors(s) and the service disconnect enclosure to the grounded conductor..."
250.24(A) "shall have a grounding electrode conductor connected to the grounded service conductor..."
250.24(B) "and unspliced main bonding jumper shall be used to connect the equipment grounding conductors(s) and the service disconnect enclosure to the grounded conductor..."
- Location
- Lockport, IL
- Occupation
- Semi-Retired Electrical Engineer
The word "ground," along with all of its variations, is an excellent source of misunderstanding. 
The "neutral" is more properly called the "grounded conductor." That is the one that gets connected to planet Earth. The reason is to provide a stable reference point for the voltage between the "center point" (i.e., "neutral") and the phase conductors.
The Equipment Grounding Conductors that tie into the Ground Bus at the main panel need to also be connected to planet Earth, but for a different reason (i.e., to limit the voltage between any accessible metal parts and the foot of a person who might be touching that metal).
The "neutral" is more properly called the "grounded conductor." That is the one that gets connected to planet Earth. The reason is to provide a stable reference point for the voltage between the "center point" (i.e., "neutral") and the phase conductors.
The Equipment Grounding Conductors that tie into the Ground Bus at the main panel need to also be connected to planet Earth, but for a different reason (i.e., to limit the voltage between any accessible metal parts and the foot of a person who might be touching that metal).
A/A Fuel GTX
Senior Member
- Location
- WI & AZ
- Occupation
- Electrician
I'd say a better way to put it would be, the neutral is bonded to ground through the GEC. The MBJ bonds the service equipment to ground as well as any EGC's downstream.
- Status