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Topic: Code compliant grounding electrode?

User: Johnhall30, Location: New Orleans, LA

Asked on: Wednesday, May 14, 2025 at 2:16 pm EDT
Answered on: Wednesday, May 14, 2025 at 2:17 pm EDT

Question: Local utility requirements call for the ground to be connected to the meter socket neutral.I interpret this install as the grounding electrode conductor originating at the panel grounding bar, and remains unspliced to the ground rods. The bare copper ground from ground bar to the meter socket is a SSBJ.However local inspectors disagree and say this install contains a non continuous grounding electrode conductor.Thoughts?

You've described a situation that's often misunderstood and can lead to disagreements with inspectors. Here's a breakdown of why your interpretation might be valid and where the inspector's concerns might stem from, along with the code references that are likely in play

Understanding the Terms
Grounding Electrode Conductor (GEC)

This conductor connects the electrical system's grounded (neutral) conductor to the grounding electrode (ground rod(s), water pipe, etc.). Its primary purpose is to provide a low-impedance path to earth for fault current.


System Bonding Jumper (SBJ)

This conductor connects the grounded (neutral) conductor to the equipment grounding conductor (EGC) at the service equipment. This connection ensures that metallic parts of the electrical system are bonded together and to the grounded conductor, providing a low-impedance path for fault current back to the source.

Equipment Grounding Conductor (EGC)

This conductor connects the non-current-carrying metallic parts of equipment (e.g., appliance chassis, conduit) to the grounding system. Its purpose is to provide a low-impedance path for fault current back to the source, which helps to quickly trip a breaker or blow a fuse in the event of a ground fault.

Your Interpretation


Your interpretation seems to be based on the following:1. GEC from Panel to Ground Rods

The grounding electrode conductor runs from the grounding bus in your service panel (where the neutral is bonded) to your grounding electrode system (ground rods).2.

SSBJ from Grounding Bar to Meter Socket Neutral

A separate bare copper conductor (your System Bonding Jumper) connects the grounding bus in the service panel
to the neutral terminal in the meter socket.In this scenario, the meter socket is bonded via the SSBJ to the neutral at the service panel and the service panel is grounded via the GEC to the ground rods.

Inspector's Concerns


The inspector's concern is likely that the GEC
must be continuous from the service equipment to the grounding electrode(s). NEC 250.64(C)

"Splicing of the grounding electrode conductor shall be permitted only by irreversible compression-type connectors listed as grounding and bonding equipment, by the exothermic welding process, or by means of listed grounding and bonding devices." This section clearly requires that if a grounding electrode conductor is spliced, it must be done in a listed manner that ensures a permanent and reliable connection. This does not apply if the GEC does not need to be spliced.

Why Your Interpretation Could Be Compliant (Depending on Local Interpretation)


Your interpretation can be compliant with the NEC if the inspector determines the ground connection at the meter is not required. You have a GEC originating at the panel grounding bar that is continuous to the ground rods, the meter socket is connected to the grounding bar, therefore the meter socket is properly grounded.

Why the Inspector Might Be Right (Common Interpretation)

The inspector is likely interpreting local requirements to mean that the path to ground must be through a continuous GEC from the service panel to the ground rods.

Resolving the Disagreement1. Code References

Ask the inspector for the specific code section(s) they believe you are violating. This will give you a concrete basis for discussion.2.

Diagram

Provide the inspector with a clear diagram of your grounding system, showing the path of the GEC, the SBJ, and all connections.3.

Documentation

If there are any local amendments or utility requirements that specify how the meter socket should be grounded, have those documents available.4.

Communication

Talk to the inspector and explain your reasoning. A collaborative approach is always best.5.

Clarification from the Utility

If the local requirement is from the utility, get written clarification from them about their expectations for grounding the meter socket.6.

Compromise

If necessary, consider installing a separate grounding electrode conductor from the meter socket neutral directly to the grounding electrode system (ground rods). This might satisfy the inspector's concern about continuity.

Important Considerations



Local Amendments

Electrical codes can be amended at the local level. Make sure you are aware of any local variations to the NEC.


Utility Requirements:
Utilities often have their own specific requirements for service installations, which can go beyond the NEC.Good luck working with the inspector to resolve this issue. Clear communication and a focus on code compliance will be key. Flag for review

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