# ELECTRICAL
> MSHA accident `220113490021` · 12/14/2011 · Alcoa World Alumina LLC
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** ELECTRICAL
- **Accident type:** Contact with electrical current
- **Occupation:** Electrician, Lineman
- **Activity:** Electrical maintenance
- **Injury source:** TRANSFORMERS,CONVERTERS
- **Nature of injury:** ELECTRIC BURN-CNTACT BURN
- **Body part:** THIGH/FEMUR
- **Days lost:** 0
- **Mine experience:** 4.54 years
## Operator
- **Controller:** Alcoa Inc
- **Operator:** Alcoa World Alumina LLC
- **Mine:** [4100320](https://api.ai-analytics.org/mine/4100320)
## Narrative

2 I/E Technicians were performing voltage measurements for phasing verification at a 480 VAC Switchgear after energizing its repaired 2 MVA Transformer. The measurements were being made between the energized transformer secondary connection at the switchgear and the switchgear bus that was energized through a 480 VAC Tie from another Substation.

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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*