In brief
- A contractor's claim of conduit routing experience is not evidence; draw-wire test records and a walk of a recent site are.
- Poor bends, crushed runs and mixed services only show up after plaster and screed, when repair means breaking the finish.
- Tie evidence requirements to the electrical subcontract in the main contract before award, not after wiring starts.
Contents
Conduit routing competency in Berbera cannot be checked from a CV, a reference letter or a low bid. The only reliable evidence is a record of runs the contractor has already installed and tested: draw-wire results, bend counts, box positions and photos taken before plaster. When wiring is later pulled through buried conduit, poor routing shows up as damage you cannot see. The client pays for that in break-outs, not in a conversation at award stage.
What does unverified routing capability look like on site?
Unverified capability shows up as routed conduit that follows the quickest path rather than the specified one. Bends get formed by hand without a spring or bender, so the internal bore flattens or kinks. Runs get tied with the wrong spacing, sit directly on the slab, or get crushed by the next trade walking over them. Draw boxes end up sunk too deep or twisted out of line, and the back box mouth fills with mortar or plaster. Mixed services get bundled into one conduit where separation was specified. None of this is visible once plaster and screed go down, so the defect is only found when a cable snags or a circuit will not pass a continuity and insulation resistance test. At that point the remedy is to break the finish, reroute and re-plaster, which costs far more than routing the conduit correctly the first time. Confirm the required bend radius, fixing spacing and separation with the project's electrical engineer or specification, and treat those as the checkpoints during inspection.
How do you test a conduit claim before award?
You test the claim by asking for the records of a previous job and then checking one of those jobs yourself. Ask for draw-wire test records showing that a pull line passed through every run without snagging. Ask for the as-built routing drawings or marked-up plans, and photographs taken before plaster closed the walls. Ask which project, which building and which date, then ask whether you can walk the site or speak to the person who supervised it. On that walk, open a sample of draw boxes and check that the box mouth is clear, the box is set to the correct depth for the finish, and the conduit enters square. Pull a draw wire through two or three runs if the building is not yet live. Ask the contractor to show the bending tool they use and the fixing method they intend to adopt here. If the answers are verbal only, or if the contractor cannot name a completed job, the claim is unverified.
Where does the gap between claim and work come from?
Claims and capability separate because conduit routing is nearly always subcontracted and often overlooked. Main contractors price it as a minor item, then hand it to a small electrical team whose only evidence of skill is a reference from a previous main contractor. Nobody on the client side opens a wall to check a bend. The bid gets priced on the assumption that routing is quick, so the crew is small and the inspection time is not included. Add the local reality that the electrical subcontract can be awarded after the structure is up, when conduit must be chased into hardened blockwork, and nobody has checked whether the team can work to the specified radius and separation. The result is concealed wiring that may be damaged during installation or later when a cable is pulled through a sharp bend. Confirm with the municipal engineer's office which permits and inspections apply to your building type, and check what your contract allows you to require as evidence before award.
What to do next
Write the evidence requirements into the electrical subcontract before award: draw-wire test records, pre-plaster photographs and as-built routing drawings for each circuit. Ask for the name and site of one completed job, then walk it and open two draw boxes. If the contractor cannot produce those records, price the risk into your supervision plan rather than accepting the claim.
Frequently asked questions
What is a draw-wire test for conduit?
A draw line or mandrel is pulled through each conduit run to show the bore is clear and the bends are not crushed. It is a general practice check; confirm the required method and acceptance criteria with the project's electrical engineer.
Can a supervisor check conduit after plastering?
Only destructively, or by pulling a cable and measuring resistance. That is why the useful checks, box depth, bend radius and fixing, have to happen before the finish goes on.
Who should hold the conduit routing evidence?
The client or their representative should hold a copy, not only the electrical subcontractor. Check what your contract allows you to require and to retain at handover.
Local reporting: this article is written for building work in Berbera and Somaliland. Ground conditions, prices and rules differ between places; confirm the details for your own site.