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Skilled trades updates

A new skilled trades certification has been announced by the Province. Learn more about how it affects our gas and electrical clients.  

High voltage interrupting switch failure results in arc flash

Incident Investigation

High voltage interrupting switch failure results in arc flash

June 30, 2019

Electrical

Reference Number:

II-882604-2019 (#14507)



Location: Nanaimo

Regulated industry sector: Electrical - High voltage electrical system (greater than 750V)
 

Impact

Injury
 

Injuries: 0

Injury description: NA

Injury rating: NA

Incident rating: Major
 

Incident overview

During a routine isolation process to install equipment and record measurements to facilitate future retrofit installations of breakers, a main high voltage interrupting switch for a transformer failed when opening, resulting in an arc flash and damage to the equipment.

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