Electric Vehicle (EV) Charging Infrastructure

Scope of works

• Excavation and reinstatement of off-site cable trenches.
• Excavation and reinstatement of jointing pits for final energization joints, including two straight joints.
• Excavation and reinstatement of jointing pits for intermediate straight joints.
• Installation of two HV cables, each approximately 250 meters long with a 300 mm² copper triplex XLPE conductor, from the Point of Connection (PoC) at Perry Barr Primary to the site.
• Installation of two HV cables, each approximately 1,570 meters long with 300 mm² aluminium triplex XLPE conductors, from the end of the copper circuit to the new substation.
• Construction of a concrete plinth and installation of the GRP housing, along with establishing substation earthing.
• Installation and termination of the RN6d and MU6d switchgear.
• Termination of HV cables onto the RN6d units and connection of the extended HV tail from the customer’s private switchgear to the rear of the MU6d.
• Installation of intermediate straight joints as required.
• Deployment of metering multi-core cables from the Metering Terminal Guard (MTG) unit to the metering terminal block within the adjacent switch room, including all necessary terminations.

Project Considerations:

Network Rail train bridge:

Excavation and Installation of 2-Way 150 mm / 160 mm Ducting – Network Rail Bridge, Wellhead Lane. The works undertaken involved completing the final duct installation across the Network Rail bridge using 160 mm Emtelle ducts and 150 mm Twinwall ducts.

All works were carried out within a phased traffic management arrangement, consisting of two-way manned traffic lights, as required under the permit issued by the BCC Traffic Permit Office.

Activities were completed under the close personal supervision of the Network Rail Engineering Team.

Excavation works close to schools, restricted working hours

Restricted Working Hours – No excavation, loading, or heavy vehicle movements during peak school times (typically 08:15–09:15 and 14:45–15:45, unless otherwise agreed with the school).

Liaison with School – Confirm term dates, bell times, and any planned events; we communicated daily with the school to ensure our work activities caused minimise disruption.

Traffic Management – Use of Chapter 8 compliant barriers, signage, and banksmen to manage pedestrian and vehicle movement.

Site Security – We ensured all excavations were securely fenced off and locked outside working hours to prevent unauthorised access.

Noise & Dust Control –Noisy operations were limited during school class times where possible; use dust suppression measures was enforced

Public Safety – Provide safe, signed pedestrian routes around the work area; ensure access for emergency services was always maintained.