Rated RED. The board can house the new LED works. Field condition records non-compliant working-space clearance.
| GPS (lat, long) | -37.678347, 144.848515 |
| Zone / apron | To be confirmed against apron key-plan |
| Upstream source (parent DB / sub) | To be confirmed against airfield reticulation drawings |
| Inspected | 21–22 June 2026 |
As-built supply and cabling recorded on site. Visual / physical condition audit only — no electrical testing performed.
| Incoming supply & earthing | |
|---|---|
| Supplied from | DB Gate 28 |
| Upstream CB way(s) | 8 |
| Phases | 3-phase |
| Line voltage | 400 V (L-L) |
| Phase-earth voltage | 230 V (L-N) |
| Earthing system | Reticulated |
| Upstream protection | Isolator only (no OCPD confirmed at board) |
| Supply cable schedule | |
|---|---|
| Active conductor size | 16 mm² |
| Configuration | 1x4C |
| Conductor arrangement | circular |
| Parallel sets | 1 |
| Conductor material | Copper |
| Insulation / type | XLPE |
| Armour | Unarmoured |
| Installation method | Underground Enclosure |
| Conduit | 100 mm |
| Loaded circuits in conduit | — |
| Estimated depth | 0.5 m |
| Earth arrangement | Separate — 16 mm² |
| Approx. length | Not recorded |
Scored per the Condition Scoring & Rating Model (six standards-referenced dimensions, 0–4 on the P-scale). Rating is gated — a single safety/structural P2 breach sets RED regardless of the averaged Index.
| Dimension | Score | Grade | Observation |
|---|---|---|---|
| Electrical safety & compliance | 2 | Moderate (P3) | Direct-contact / earthing / labelling integrity |
| Structural & enclosure integrity | 2 | Moderate (P3) | Enclosure & chassis mechanical integrity |
| Corrosion & protective coating | 1 | Minor (P4) | Corrosion of fixings, bars and coatings; general fouling |
| Ingress protection | 2 | Moderate (P3) | Sealing of penetrations against dust / water ingress |
| Access & working space | 3 | Major / safety (P2) | Door opening arc and working-space clearance |
| Thermal / fire & component | 0 | None observed | None observed |
Field-observed defect(s) for this board, itemised into discrete findings — each with its own priority and category.
| Ref | Category | Defect | Pri |
|---|---|---|---|
| D-01 | Structural | Previous structural repairs noted | P3 |
| D-02 | Housekeeping | Internal dust / dirt accumulation | P4 |
| D-03 | Electrical | Non-standard insulation on busbar combs | P3 |
| D-04 | Corrosion | Minor surface rust to fixings and bars | P4 |
| D-05 | Labelling | No circuit schedule card / designation | P3 |
| D-06 | Ingress | Pest / vermin activity noted | P3 |
| D-07 | Clearance | Non-compliant door / working-space clearance | P2 |
The new LED floodlight load and driver footprint are materially smaller than the legacy HID gear removed, and the existing 3-phase supply, 16 mm² feed and cabinet isolation are adequate for the new works. This conclusion is universal across the fleet and is independent of condition.
12 site photographs. Frames outlined in orange are keyed to a priority defect (fire, structural, access or ingress evidence).