Skip to main content
Stesso

Diagnose Commercial 3-Phase Arcing Circuit Breaker

0:39
1:05
33.3K views

At 0:39 in

Electrician Service Call, Customer Said they heard Buzzing in their Home Electrical Panel, Thoughts?

Watch on YouTube

What happens here

The electrician moves to a commercial setting, addressing another service call for a 3-phase 480-volt 50-amp circuit breaker for a 'snow blade' that is arcing. His colleague, Ken, uses an amp meter to check the amperage being drawn by the circuit. They determine that the breaker was tripping, and further inspection reveals significant burn marks on the panel cover, indicating severe arcing within the commercial electrical panel.

Goal: Diagnose the cause of arcing and tripping in a commercial 3-phase electrical panel.

Tools and materials

  • Clamp Meter / Ammeter — Measuring the amperage being drawn by the circuit
  • Commercial Electrical Panel — The industrial electrical distribution system
  • Flashlight — Illuminating the interior of the electrical panel for inspection

What they say

Hide

good. Just needed a new breaker and tighten connection. Customer is satisfied, and onto the next call. Warehouse called and said that their 3-phase 480-volt 50-amp circuit breaker for a snow blade was arcing. Here's my bro Ken using his ammeter to see how much amperage is being drawn. The main said it was tripping, so we have to troubleshoot, and it was arcing, and it was due to the burn marks in the panel cover. Follow for more electrician content and see how we get it fixed. Tune in for part two to see how we get it fixed.

Auto-generated from the video audio.