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Inspecting the board, and coding as you goMissing blank, finger in the board. What code?

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The question at the end: Missing blank, finger in the board. What code? The answer is in the notes below.

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The schedule of inspections, item by item. Every item carries a regulation number: if you’re not sure whether what’s in front of you is right, read the regulation, then look again. Everything you code goes into the observations as well.

The very first thing found, lifting the flap: a missing blank. A finger goes in, millimetres from a live part.

C1 danger present missing blank front not IP2X C2 potentially dangerous 1.0 mm² on 16 A trunking lid off ring line open C3 improvement recommended MET label missing one C1 or C2 anywhere → the report is unsatisfactory
What this board turned up.
FoundCodeWhy
Missing blank — front surface not IP2X / IPXXBC1Direct access to a live part. Tell the person who ordered the report straight away, in writing
“Safety electrical connection” label missing at the METC3Required, but its absence makes nothing unsafe
Lighting circuit in 1.0 mm², run through loft insulation, on a 16 A deviceC2Buried in insulation, the cable’s rating drops well below 16 A: In must not exceed Iz
Inspection lid off trunking, non-sheathed cables reachableC2Only basic insulation between a finger and a live conductor
  • The intake is visual only. Service head, cut-out, meter, tails: look for damage, overheating, tampering, and tails whose grey sheath stops short where it can be touched. You don’t take any of it apart. A defect on the supplier’s equipment isn’t yours to fix — record it, and make sure the person who ordered the report knows, so the supplier can be told.
  • Line and neutral of each circuit through the same entry into a metal board — the tails especially. Together, their magnetic fields cancel. Through separate holes, they heat the steel around them.
  • Mixed makes of device in a board, where the manufacturer doesn’t allow it, is worth a hard look.
  • Record what you see. The 16 A goes on the schedule as 16 A. You know it’s wrong; that’s why it’s coded.
The observation says what’s wrong, not how to fix it. “Lighting circuit wired in 1.0 mm² T&E through thermal insulation, protected by a 16 A device” — not “change to a 6 A”.

BS 7671 · Reg 433.1.1 · Ib ≤ In ≤ Iz · p.103 Best Practice Guide 4 · coding examples

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