Transformer Damaged Beyond Repair During Excavation
Incident Investigation
Transformer Damaged Beyond Repair During Excavation
October 20, 2022
Electrical
Reference Number:
II-1454740-2022 (#30195)
Location: Golden
Electrical - Low voltage electrical system (30V to 750V)
Incident Overview
An excavator was digging a trench close to a building when the bucket hooked onto a grounding conductor causing irreparable damage to the transformer. The shallow unmarked depth of the system grounding conductor was the primary cause of the incident.