Re-energization of an upstream circuit breaker fails to ground.
Incident Investigation
Re-energization of an upstream circuit breaker fails to ground.
September 30, 2018
Electrical
Reference Number:
II-751517-2018 (#8849)
Location: Saanich
Regulated industry sector: Electrical - High voltage electrical system (greater than 750V)
Impact
Injury
Injuries: 0
Injury description: NA
Injury rating: NA
Incident rating: Moderate
Incident overview
During a site re-energization of an upstream circuit breaker, the main 25KV to 600V 3 phase 1000KVA transformer failed to ground.