Example Electrical O&M Manual
See what a finished Electrical O&M Manual from Project-OM looks like. The example below is based on a fictional project — Thornfield Commercial Fit-Out, Unit 4 Riverside Business Park — and shows the cover page, contents page, scope of works, system descriptions, document register and certificate register.
Cover page
Every manual opens with a cover page identifying the project, the contractors involved and the document reference.
Electrical Installation
Thornfield Commercial Fit-Out
Unit 4, Riverside Business Park, Riverside Way, Manchester, M5 3AB
- Main contractor
- Hallcrest Construction Ltd
- Electrical contractor
- Voltedge Electrical Services Ltd
- Document reference
- TCF-ELEC-OM-001
- Issue date
- Revision 02 — 14 March 2026
Contents page
A clear contents page sets out every section of the manual and where it can be found.
Contents
- 1. Project Details3
- 2. Document Revision Record4
- 3. Electrical Scope of Works5
- 4. System Descriptions6
- 5. Asset & Equipment Schedule9
- 6. Manufacturer Datasheets11
- 7. Test Certificates18
- 8. Commissioning Records24
- 9. As-Built Drawings29
- 10. Warranty Information31
- 11. Maintenance Recommendations33
- 12. Emergency Contacts35
Scope of works summary
A short summary explains what the manual covers before moving into system-by-system detail.
Electrical Scope of Works
This Operating & Maintenance Manual covers the electrical installation works carried out by Voltedge Electrical Services Ltd at Unit 4, Riverside Business Park, Manchester, as part of a Category A to Category B commercial fit-out of the ground and first floor office suites. The scope includes new low-voltage distribution boards, general lighting and lighting controls, emergency lighting, small power distribution, containment, and first and second fix cabling throughout the demised area. Works were carried out under main contract reference HCL-2026-014 and reached practical completion on 12 May 2026.
System descriptions
Each electrical system installed is described separately, with details of distribution, control and the relevant standards.
System Descriptions
4.1 General lighting
The general lighting installation comprises recessed LED panels and surface-mounted LED battens throughout the office floor plates, controlled via a DALI lighting control system with PIR and daylight-linked sensing to open-plan areas. Lighting circuits are distributed from DB-LG1 (ground floor) and DB-LG2 (first floor).
4.2 Emergency lighting
Emergency lighting is provided by self-contained LED luminaires with integral 3-hour battery packs, installed along escape routes, at final exits and over fire-fighting equipment in accordance with BS 5266-1. The system operates in non-maintained mode and was tested and certified as part of the commissioning records included in Section 8.
4.3 Small power
Small power distribution comprises wall-mounted twin sockets, floor box outlets to open-plan desking areas, and dedicated supplies to kitchenette and comms room equipment. Circuits are distributed from DB-SP1 (ground floor) and DB-SP2 (first floor), each circuit protected by RCBO devices.
Document register
A register lists every supporting document included in the manual, with its reference, revision and date.
Document Register
| Document | Reference | Revision | Date |
|---|---|---|---|
| Electrical Job Specification | TCF-SPEC-E-01 | Rev 03 | 02 Apr 2026 |
| LED Panel Datasheet — Tamlite TP600 | DS-LIGHT-001 | — | — |
| Emergency Light Datasheet — Ovia Inceptor | DS-EL-002 | — | — |
| Distribution Board Schedule — DB-LG1 | SCH-DB-LG1 | Rev 02 | 28 Apr 2026 |
| As-Built Lighting Layout — Ground Floor | DWG-E-101 | Rev B | 05 May 2026 |
| As-Built Small Power Layout — First Floor | DWG-E-205 | Rev A | 05 May 2026 |
Certificate register
A register lists every certificate included in the manual, with its reference, issue date and issuing contractor.
Certificate Register
| Certificate | Reference | Date issued | Issued by |
|---|---|---|---|
| Electrical Installation Certificate | EIC-TCF-001 | 08 May 2026 | Voltedge Electrical Services Ltd |
| Minor Works Certificate — Kitchenette Supply | MWC-TCF-014 | 30 Apr 2026 | Voltedge Electrical Services Ltd |
| Emergency Lighting Commissioning Certificate | ELC-TCF-002 | 09 May 2026 | Voltedge Electrical Services Ltd |
| Fire Alarm Interface Test Certificate | FAT-TCF-003 | 09 May 2026 | Pinnacle Fire & Security Ltd |
Your manual is delivered as a single, clearly sectioned PDF — structured like the example above and ready to issue to your client or main contractor.
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