ELV System Design Calculator Toolkit (Cable Length, UPS Sizing, NVR Storage, PoE Budget) Excel

Plan everyday low-voltage system requirements with one practical, English-language Excel toolkit. Built for ELV engineers, estimators, installers and project teams, this workbook brings four useful planning calculators into a consistent, easy-to-follow layout inspired by a professional bill-of-quantities template.

Estimate cable quantities by route and cable type, size UPS loads in both kVA and kW, explore approximate battery runtime, calculate CCTV recording storage and retention, and check a switch’s PoE budget and individual port limits. Clearly marked yellow input cells, blue formula outputs, example data and dropdown selections help you get started without macros or add-ins.

Use it to compare early design options, prepare estimates and communicate assumptions before selecting equipment. Every calculator includes units and guidance so you can review the logic rather than rely on a black box. This is a planning aid, not certified engineering software: verify manufacturer specifications, site conditions and applicable standards before purchase or installation.

## Features

- Four formula-driven calculators plus detailed instructions.

- Cable totals by type, 305 m box estimates and Cat6 100 m channel warnings.

- W / VA load entry, growth allowance, kVA / kW and approximate battery runtime.

- Camera-group storage, motion recording duty, RAID loss, capacity reserve and retention checks.

- IEEE PoE class and switch-port checks, load headroom and port-count warnings.

- Editable .xlsx; no macros, external data connections or subscriptions.

- Prefilled illustrative examples; all assumptions remain visible.

Also available: ELV / Low-Voltage BoQ Excel Template — https://payhip.com/b/F2DTk