There are several things you can do to try to reduce neutral-to-earth voltage. Keep in mind, though, that some N-E voltage will always exist in electrical systems.

If the problem originates on the farm:

• Upgrade electrical system.
• Replace faulty equipment that may produce leakage currents.
• Install heavier equipment grounds or adequate power circuits.

If the problem originates off-farm:

• Always consult with your power supplier to work out a safe and effective solution.
• Installation of an isolation transformer on the farm may be advised - you will then assume responsibility for maintaining a proper neutral ground on the farm.

If the problem originates on and/or off-farm:

• Provide an “equipotential plane” in milking parlors as a way of eliminating the possibility of current flowing through a cow’s body.

Neutral-to-Earth Voltage

Who is affected?

What are the symptoms?

What is the source of neutral-to-earth voltage?

What to do if you suspect neutral-to-earth voltage?

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