Tier 1 was appointed to plan and deliver intrusive maintenance works to several main LV distribution panels serving critical clinical areas within a large acute NHS hospital.
The panels supplied Operating Theatres, A&E, Intensive Care and Neonatal Intensive Care. Due to the criticality of these environments, the works required full temporary resilience provision and carefully coordinated changeover planning alongside clinical and estates teams.
We developed and installed a managed temporary generation solution to support essential services while the permanent LV panels were isolated and opened for inspection.
Throughout the works, 24-hour monitored temporary power was maintained on site to ensure service continuity and actively de-risk any generation fault scenario.During intrusive inspection of the LV switchboards, a number of serious defects were identified, including failed busbar retention insulators, burnt-out Micrologic protection units, loose high-current connections and visible evidence of internal electrical arcing.
These defects were rectified, defective components replaced, connections re-terminated and protection systems tested prior to staged re-energisation.The works were completed without disruption to clinical operations, and power was reinstated to significantly safer and more reliable infrastructure.



Temporary generation installed and commissioned to support critical clinical services during LV maintenance works.
Planned and sequenced changeover from mains to temporary supply in coordination with clinical and estates teams.
Intrusive inspection of main LV panels serving theatres, A&E, ICU and NICU.