Question on 250.24

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tonyou812

tonyou812

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North New Jersey
:-? Ive always been under the impression that, lets say in a residential service lateral one could connect the GEC to the meter pan, or the main ocpd but if You read 250.24(A)(1)

General. The grounding electrode conductor connection shall be made at any
accessible point from the load end of the service drop or service lateral to and including the terminal or buss to which the grounded service conductor is conneted at the service disconnecting means.


does that mean it "has" to go to the main beaker panel? or are they saying it can go were the grounded conductor conductor enters the service?

A friend of mine have been going back and forth on... am i missing something here.:-? I always though it ment you must ground it were it enters the service. So why does it say at the service disconnect means in the last sentance?

sorry if this was already disscused I checked the archives.
 
If I understand your question Tony my answer is it has to go to the panel. If by GEC you mean the neutral.Its the center tap of POCOs transformer and the path to clear faults.
 
I re-read your post and now I'm not sure if you are talking about the EGC. A different animal. The EGC has to be bonded to the neutral in the main panel but is usually not run into the meter base. Most POCOs will be very unhappy about that.The EGC that goes to earth ground is for lightning protection and or voltage stabilization.
 
iaov said:
I re-read your post and now I'm not sure if you are talking about the EGC. A different animal. The EGC has to be bonded to the neutral in the main panel but is usually not run into the meter base. Most POCOs will be very unhappy about that.The EGC that goes to earth ground is for lightning protection and or voltage stabilization.
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He knows what it is, he was confused on the wording in the section on where else you can land the EGC other than the service disconnect.
 
Im talking about the wires to the ground rods the water pipe that enters the building. In the past ive brought those to the meter socket. But my frind is telling me that its wrong. My question really is why does it say at the service disconneting in the last sentance of 250.24(A)(1)?
 
tonyou812 said:
Im talking about the wires to the ground rods the water pipe that enters the building. In the past ive brought those to the meter socket. But my frind is telling me that its wrong. My question really is why does it say at the service disconneting in the last sentance?
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Did you look at the picture in post 3? Your friend is wrong by the way, unless its prohibited by your POCO.
 
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tonyou812 said:
I made a copy of the picture and gave it to him but he asked me why it says service disco in the last sentance and I didnt have a response for him.
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Because, you can only land the GEC in those 3 locations. I'm not sure I understand what your friend does not understand.
 
Im having a senior moment and Im only 37.... everytime I read it I feel like its saying it can only go at the main service disconnect because it says "to and including the terminal or buss"
 
tonyou812 said:
General. The grounding electrode conductor connection shall be made at any accessible point from the load end of the service drop or service lateral to and including the terminal or buss to which the grounded service conductor is conneted at the service disconnecting means.


does that mean it "has" to go to the main beaker panel? or are they saying it can go were the grounded conductor conductor enters the service?
Click to expand...
It means that the (first) main disconnect is the last place in the service pathway that the GEC can land.

"Any accessible place" means just that: where the drop or lateral conductors splice to the service conductors, or in the meter base (but we're not allowed to here :mad:), or in whatever enclosure contains the main disconnect.

Note that all of these locations are where the service neutral is also the EGC. The main disconnect is the origination point of the separation of neutrals and EGC's, and is the last place electrodes may be connected.

The last place, not the only place.
 
tonyou812 said:
Im talking about the wires to the ground rods the water pipe that enters the building. In the past ive brought those to the meter socket. But my frind is telling me that its wrong. My question really is why does it say at the service disconneting in the last sentance of 250.24(A)(1)?
Click to expand...

Tony if tyou read the entire sentence it is stating that you can connect the GEC at any accessible point from the load end of the service lateral or drop all the way to and including the service disco. So as Stickboy says. The load side of the drop is at the top of the mast or riser or anywhere in between there and including the service disco. Does that help.
 
Good question!

They stopped us from doing this in 1987.

It seems they have different views on this around here. One say it's not accessible, while another says it is.

Our rule. Hit the main.
 
Okay, What about a common 200 amp meter base combo.
It's all service eqipment until it leaves the disconnect.

Then what about a 400 amp service with 2 - 200 amp main disconnects.
Obviously you would go to the meter base.
But that could also be a meterbase combo
 
One would think that you would want to redirect any lightning or fault current away from the main panel and right to the ground??? when does readilly accessableness ever become an issue that you cant work around?
 
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