Commercial EICR for Data Centres in Reading

Uptime is the deliverable. A data centre operator will accept almost any inconvenience or scheduling constraint before it accepts a mains-out event that trips a tenant SLA. That reality shapes every commercial EICR in the sector: the inspection cannot happen on live A-side and B-side power simultaneously, and cannot leave a single point of failure exposed while an engineer is on the switchgear. The Reading and M4 corridor is one of the most tested places on the UK grid because operators refuse to leave that risk uninspected. 

Zero-Downtime EICR for Reading Data Centres 

We deliver EICR (fixed wire testing) for colocation, edge and hyperscale data centres across Reading and along the M4 corridor into Slough. Every inspection is designed around your concurrent maintainability model: the live path carries the load while the redundant path is de-energised, tested and returned to service. Engineers are NICEIC-approved, City & Guilds certified and DBS checked for hyperscaler tenant floors. Reports are delivered as a certified commercial EICR formatted for insurer, landlord and tenant audit teams. 

Concurrent EICR Testing Across A and B Power Paths 

The A-B split is what makes concurrent testing possible. Our engineers work with your facility team to isolate one path at a time, verify the transfer to the redundant path is clean, and run the de-energised side through a normal EICR sequence: insulation resistance, earth continuity, polarity and RCD operation. Supply is restored before mirror-image work begins on the other side. Timing is built around your maintenance window, generator run schedule and tenant change-freeze calendar. 

What a Data Centre EICR Covers 

A data centre EICR covers substantially more infrastructure than a standard commercial installation: 

• Incoming HV to LV transformers and main switchboards 

• Automatic transfer switches (ATS) and static transfer switches (STS) 

• UPS systems, bypass paths and battery cabinet feeds 

• Standby generator switchgear, control panels and fuel system electrics 

• LV distribution across MCCBs, sub-mains and PDUs 

• Remote power panels (RPPs) and rack-level power strips 

• Mechanical plant feeds: CRAC, CRAH and chilled water pump circuits 

• Lighting, small power and life-safety systems across white and grey space 

A thermographic survey is normally scheduled alongside to catch developing hot spots under live load. Our guide to thermal imaging for electrical maintenance covers how the two work together in a critical environment. 

Working With Your Facility Team, Landlord and Tenants 

A data centre EICR rarely involves a single point of contact. Our engineers coordinate directly with the M&E team on site, the landlord or REIT if the building is leased, and the change-control representatives of any hyperscaler or enterprise tenant carrying live workloads through the visit. We produce method statements and RAMS to your permit-to-work standard, book slots inside your published change window, and return for remedial work under the same phased approach. Every job forms part of our wider electrical compliance offer across Reading and supports duties under the Electricity at Work Regulations 1989. 

Request an EICR Quote for Your Reading Data Centre 

Send a short brief with site tier, IT load, A/B distribution layout at whatever detail you can share, and your next planned maintenance window. We will build a phased quote around it, with method statement and RAMS delivered before any engineer arrives on site.