Briefing 03 // SUBSYSTEM: Backup Power // 31 PAGES A4 PDF
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Commercial LiFePO4 UPS & Changeover Sizing Guide for UK Premises
Engineering calculations for keeping comms racks, EPOS, boilers, and cold storage running through multi-day outages.
Mandatory Plant-Room Commissioning Checklist
- Audit critical single-phase and three-phase site loads in Watt-hours per day (Wh/day)
- Size LiFePO4 battery reserve for 24 to 72 hours of autonomy at 80% Depth of Discharge (DoD)
- Install a BS EN 60947-3 break-before-make manual or automatic transfer switch on critical sub-boards
- Verify Neutral-Earth bonding and RCD protection with an NICEIC/NAPIT commercial contractor
Full Standard Operating Procedure (SOP) Protocol
# RESILIENCE LAB TECHNICAL SOP 03
## Commercial LiFePO4 UPS & Changeover Sizing Guide for UK Premises