What is a floating neutral and how do I fix it – Advice from Electriman, North London Electricians

What Is a Floating Neutral in Plain English?

Imagine your home's electrical system as a seesaw. The neutral wire is the pivot point that keeps everything balanced. If that pivot is lost — the neutral 'floats' — voltages across your circuits become unpredictable and potentially lethal.

What the neutral actually does:

It provides the return path for current in every circuit in your home

It is bonded to earth at the supply transformer, keeping it at roughly 0 volts

Without it, live voltages can appear on conductors you'd normally expect to be safe

Common signs you might have a floating neutral:

Lights flickering or dimming unexpectedly, especially when other appliances switch on

Some appliances running too fast or too bright, others too slow or dim

Electrical items failing or burning out in sequence

A burning smell near the consumer unit or meter

RCDs or MCBs tripping for no obvious reason

In split-load boards, one half of the house behaving differently to the other

What you can safely check yourself:

Look at your consumer unit for any obvious signs of burning, scorch marks, or a loose grey/blue neutral bar

Check whether the meter tails (the thick cables entering your consumer unit) look undamaged

Check if your neighbours on the same street are also having power issues — this may indicate a DNO (Distribution Network Operator) fault upstream

What you must NOT do:

Do not open the co

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Electriman covers Mill Hill, Barnet, Finchley, Edgware, Enfield, Watford and surrounding areas. All work is Part P certified and fully insured.