Okay, let's analyze your diagram and the implications of your 130m distance between the meter base and the panel.

Analysis of your diagram

From your diagram, I see:

Main Panel

You have a 50A panel with a breaker and a neutral bus bar.

Grounding Electrode Conductor (GEC)

A GEC connects the neutral bus bar to a ground rod.

No obvious explicit bond only at the panel.Is Neutral and Ground Bonded at the Panel?

Based on your diagram alone, it appears as though the neutral and ground are not bonded at the panel only in your diagram. There is a GEC coming from the neutral bar that is bonded to a ground rod.

Important Considerations Due to Distance (130m)

The 130-meter distance between the meter and the panel significantly impacts how grounding should be done. Here's why:1.

Voltage Drop on Ground Faults

At 130m, the impedance of the neutral conductor becomes significant. In the event of a ground fault (a live wire accidentally touching a grounded surface), a voltage difference could develop between the neutral at the meter and the neutral at the panel. This voltage could be high enough to be dangerous and/or prevent the breaker from tripping quickly enough to clear the fault.2.

Multiple Grounding is ESSENTIAL. For a long run like this, you absolutely must have multiple grounding electrodes along the run, and potentially at both the meter and the panel.How it Should be Done (Typical Practice)

Given the distance, the usual practice would be:

Meter Base

Neutral and Ground

are bonded at the meter base. The utility typically handles this bond. A grounding electrode system (ground rod, ground ring, etc.) is installed at the meter base and connected to the neutral/ground bond. Main Panel (Your 50A Panel)

The neutral conductor from the meter base lands on the neutral busbar in the panel. The

Grounding Electrode Conductor (GEC) from the neutral busbar connects to a local grounding electrode system (ground rod, etc.) installed at the panel. The GEC is sized according to the service entrance conductor size. All metal enclosures (panel box) should also be bonded to the ground bus bar, using a ground wire.

Therefore, what you need to confirm is that bonding is done at the meter base.Recommendations & What You MUST DO


Consult a Qualified Electrician

This is critical. A licensed electrician is the only person who should make modifications to your electrical system, especially with a long run like this. They can assess your existing installation, ensure it meets code, and perform the necessary work safely.2.

Verify Bonding at Meter Base

Contact your utility company or have your electrician inspect the meter base to confirm that the neutral and ground are bonded there and that a grounding electrode system is present. This is usually their responsibility.3.

Install Local Grounding at Your Panel

Ensure you have a properly sized GEC connecting your panel's neutral bus bar to a grounding electrode system (ground rod, etc.) driven near the panel. This is what your diagram shows, but it needs to be properly sized.4.

Size Conductors Appropriately

Given the distance, ensure the conductors from the meter to the panel are sized appropriately to minimize voltage drop. The electrician can calculate this based on your expected load.5.

Check Local Codes

Local electrical codes may have specific requirements for grounding in long-run situations. Your electrician will be familiar with these.

In summary: Your diagram alone doesn't tell the whole story. The 130m distance necessitates careful attention to grounding, and you absolutely need a qualified electrician to ensure your system is safe and code-compliant. Flag for review