Project Details

Lewiston Public Works faced a significant challenge with their nearly 100-year-old lighting infrastructure, which has undergone extensive repairs and now requires replacement to maintain system integrity. RLC Engineering was brought in to address this issue as part of the Public Works Lighting O&M plan.

Our team conducted a thorough inspection of the existing lighting circuit to determine whether the infrastructure was sufficient or required upgrades. The project covered over three miles of primary circuit, both overhead and underground, and involved creating new site drawings and reports that highlighted current configurations and suggested changes.

The project involved a 4.16 kV three-phase system that transitions to single-phase in some areas. Recent upgrades to LED lighting have caused dramatic shifts in the loads on the phases, necessitating further studies and adjustments to the system.

Although this project was not a standard undertaking for RLC Engineering, our team’s diverse skillset and specialized expertise allowed us to adapt and successfully meet the client’s needs, showcasing our flexibility within the industry.

Scope of Services

• Site visit to inspect the lighting circuit and note any visible issues.
• Developed detailed site plans and one-line showing the lighting circuit.
• Prepared a field-assessment report which highlighted the current condition of the circuit road by road.
• Created an Arc-Flash report to reflect recommended system updates and new loads on each phase.