Bonding

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Fausto

Member
Location
Milford MA
Occupation
Electrician
I did a service upgrade from 100 to 200 amps.
I labeled EMERGENCY DISCONNECT
NOT SERVICE EQUIPMENT
It’s a mid size ranch house NOT NEW still with copper pipe.
this inspector said that because water main in new houses are now plastic pipe which is not the case here, he wants me to get the meter main ground and put in the main panel, which is grounded with water main. I am so freaking confused.
 
If you have copper pipe at the entry to the building then you will probably need a grounding electrode conductor that goes back from with 5' of where the copper enters the building to the main service. You will also need the 2 rods.

I am confused by what you are saying
 
It sounds like the inspector is requesting that a pair of rods be added because of increased use of plastic pipe.

The panel upgrade seems to have triggered a requirement for electrode updating.
 
LarryFine said:
It sounds like the inspector is requesting that a pair of rods be added because of increased use of plastic pipe.

The panel upgrade seems to have triggered a requirement for electrode updating.
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Increased use of plastic pipe does not trigger a requirement for ground rods. If there was no CEE present, the rods probably should have been there all along.
 
Inside I have a grounding electrode conductor coming from the copper pipe Water main and bonded with grounded electrode conductor in main panel.

Then outside I have my grounding electrode conductor bonded with the grounded electrode conductor.

Inspector wants me to take my grounding electrode conductor from my 2 grounding electrodes outside and put it in main panel with grounded electrode conductor.
 
I'm not sure I totally understand your description but will say that you MBJ must be at the service disconnect. The GEC can there as well which seems to be what you are describing. You can't connect the GEC at more than one place. The outside emergency disconnect is just like any other metallic item on the line side of the service disconnect and must be bonded per 250.92. For switch used as an emergency disconnect you could comply with 250.92 just by simply installing the bond screw. Keep in mind all of your grounding electrodes must be bonded together and all metallic items on the line side must be bonded per 250.92.
 
Connecting grounding electrode conductors from different grounding electrodes at different locations is not prohibited by the code.
With our utility, and an interior service disconnect we will always have that as our utility requires two ground rods at the meter and the GEC from those ground rods to be landed in the meter. The GEC from the water pipe would typically be connected in the service equipment.
 
don_resqcapt19 said:
Connecting grounding electrode conductors from different grounding electrodes at different locations is not prohibited by the code.
With our utility, and an interior service disconnect we will always have that as our utility requires two ground rods at the meter and the GEC from those ground rods to be landed in the meter. The GEC from the water pipe would typically be connected in the service equipment.
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That is exactly what we do but some power company's will not allow the grounding electrode conductor at the meter.
 
You can connect the one GEC at the meter for the two rods and the other GEC at the service disconnect for the water pipe.
 
don_resqcapt19 said:
Connecting grounding electrode conductors from different grounding electrodes at different locations is not prohibited by the code.
With our utility, and an interior service disconnect we will always have that as our utility requires two ground rods at the meter and the GEC from those ground rods to be landed in the meter. The GEC from the water pipe would typically be connected in the service equipment.
Click to expand...

So since I labeled (utility) not service equipment now I have to bring GEC to interior service disconnect or service equipment.

petersonra said:
is there some reason you do not want to put it at the service disconnect?
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Fausto said:
thats How it’s done now
But he wants everything in service disconnect
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Unless there is a reason why it's not allowed in the meter the inspector is incorrect. Around here the local POCO does not allow the GEC to terminate in the meter enclosure. A GEC can terminate anywhere from the service drop to the service disconnect. {250.24(A)(1)}
 
petersonra said:
is there some reason you do not want to put it at the service disconnect?
Click to expand...
If you install theMBJ at the
petersonra said:
How does putting a label on the disconnect change it from being the service disconnect? Electrons cannot read.
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Because that is what the code making panel wanted the rule to say. The intent is to permit the replacement of the interior service equipment, which triggers the requirement for the Emergency Disconnect, without having to rework the existing grounding electrode conductor connections.
 
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