Light bulbs keep burning out one after another and electricians are booked through New Year. What’s going on?

Incandescent filaments to run hotter and thin faster

LED drivers to overheat or fail prematurely

CFL ballasts to degrade rapidly

Even a small increase—say from 120V to 128V—can reduce bulb life by 50% or more.

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Why Overvoltage Often Shows Up Suddenly
Voltage problems often appear all at once because something changes:

A utility transformer is adjusted or replaced

A neutral connection degrades

Seasonal power demand shifts (more on this later)

When that happens, bulbs across the house can start failing in clusters.

2. Loose or Faulty Neutrals: A Serious (But Often Invisible) Problem
One of the most dangerous causes of repeated bulb burnout is a loose neutral connection.

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What Is a Neutral Wire?

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