In brief
- A low electrical testing bid often prices only a visual look, leaving insulation resistance, polarity, earth continuity and RCD trip tests out of the scope.
- The gap appears when the priced schedule does not name each test, so ask which tests are included and who signs the results sheet.
- You close the gap by tying payment to a named test schedule and a signed results sheet issued before energising.
Contents
Electrical testing underbidding risks in Qardho come from scope, not price. Testing is labour and instrument time, and a low figure can mean the scope was cut. Insulation resistance, polarity, earth continuity and residual current device trip tests get left out, or the whole job is reduced to a quick visual walk with no results recorded. The work looks finished, the lights work, and the faults stay buried in the walls.
What does electrical testing underbidding leave out in Qardho?
A low bid may leave out the tests that need instruments, time and a written result. A full check on a new installation can cover continuity of protective conductors, insulation resistance between live conductors and earth, polarity, earth electrode resistance where an electrode is used, and the trip time of each residual current device. General practice is to test circuits before energising them, then again at handover, but confirm the exact schedule with the project engineer and the specification.
A bidder who prices only a visual inspection can still sign a completion certificate. A low bid may not name the instruments, the number of circuits to be tested, or the person who signs the results. The gap can appear later as a tripping breaker, a shock risk, or a circuit that cannot carry its load. A latent fault may sit quietly for months. Ask the bidder to list, in writing, which tests are included, which instrument will be used, and who signs the results sheet.
How do unrealistic tender allowances hide the gap?
They hide it by sharing one line between several jobs. In a priced bill, testing sometimes appears as a single item covering instrument hire, the electrician's time, travel between buildings, re-testing after faults are corrected, and paperwork. If that one figure has to cover all of it, the bidder recovers the difference elsewhere or skips the slowest parts.
Omitted costs also land on the client. Faults found late mean opening walls, replacing cable and testing the circuit again. Check the bid for separate items for test equipment, testing labour, fault correction and re-testing. Ask each bidder to price instrument time, testing labour and re-testing separately, so the same written schedule is compared across bids. Where a figure is unclear, ask the contractor to break it down, then check what your contract allows before you release any payment. Walk a recent building the bidder completed and ask to see the test records for it.
How do you detect undetected wiring faults before handover?
You detect them by holding a test before the installation is energised. Appoint one person, ideally the project engineer or a third party, to witness the tests and sign the results. Do not accept a verbal assurance that everything is fine. A results sheet should name each circuit, the reading, the instrument used and the date.
Set the sequence so that testing is finished and recorded before ceilings close. After that, faults become expensive to find. Ask the municipal engineer's office which local practice applies to your plot, and confirm the acceptance criteria against the project specification. If the contract allows staged payment, link a stage to the signed results rather than to the number of fittings installed.
What to do next
Write a one page testing schedule, send it to at least two contractors with the same drawings, and require a signed results sheet per circuit before energising. Ask each bidder to price instrument time, testing labour and re-testing separately. Then check what your contract allows before you release the payment tied to that stage.
Frequently asked questions
Who should witness electrical testing in Qardho?
The project engineer or a third party appointed by the client should witness the tests and sign the results. Ask the municipal engineer's office what local practice applies, and confirm the acceptance criteria against the project specification.
Can a contractor refuse to show test records?
A contractor may say records were not kept. Make the signed results sheet a condition of the relevant payment stage, and check what your contract allows before withholding anything. Walking a recent completed building and asking to see its records is a quick way to test the claim.
Local reporting: this article is written for building work in Qardho and Puntland. Ground conditions, prices and rules differ between places; confirm the details for your own site.