Why Neutral Conductors Are Overheating | Harmonics, EV Chargers & Modern Electrical Systems

Why Neutral Conductors Are Overheating | Harmonics, EV Chargers & Modern Electrical Systems

From TORQUE UP by William Winter and Friends

March 12, 2026 · 1h 30m · Season 3 · Episode 11

About this episode

This episode discusses the overheating of neutral conductors in modern electrical installations and the impact of harmonics and electronic loads.

Neutral conductors running hotter than the phase conductors. It sounds backwards. But electricians across the industry are starting to see it happen more and more. In Episode 32 of Torque Up , we sit down with the team from Chauvin Arnoux UK (CA UK) to break down what is really happening inside modern electrical installations. With the rise of LED lighting, EV chargers, solar systems, variable speed drives and electronic loads, the electrical systems we work on today behave very differently to the resistive systems they were originally designed for. Harmonics, non linear loads and DC electronics are changing the way current flows through installations. In some cases this is leading to neutral conductors carrying more current than the phases , overheating cables and creating real risks if the issue goes unnoticed. In this episode we discuss: 🟢 Why neutral conductors are overheating in modern installations 🟢 How harmonics from modern electronics are affecting electrical systems 🟢 EV chargers shutting down when voltage reaches 253V 🟢 The growing importance of power quality measurement 🟢 How electricians can protect themselves with data logging and testing 🟢 Where…

People in this episode

Host: William Winter

Guest: Chauvin Arnoux UK

Topics covered

  • neutral conductors
  • harmonics
  • EV chargers
  • modern electrical systems
  • power quality measurement
  • data logging
  • electrification

Keywords

  • neutral conductors
  • overheating
  • harmonics
  • EV chargers
  • power quality
  • data logging
  • electrical systems

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