Clamp meter calibration for construction
Site electricians use clamp meters to verify load on temporary supplies and distribution boards before handover. A calibrated clamp turns a spot check into a defensible commissioning record.
A clamp meter reads current without breaking the circuit, which makes it the default tool for load surveys and motor checks — and makes its accuracy hard to sanity-check in the field. AmpTech calibrates AC and DC clamp meters in our Caversham lab, driving known currents through the jaw from a traceable reference and checking the meter's other functions at the same time.
Interval in construction
12 months
Manufacturer default
Setting the interval
Twelve months is standard. Clamps used for energy audits or for readings that feed into invoicing or reports are often kept on a tighter interval because the current reading is the product.
What the calibration covers
- AC current at points up to 11 A, the ceiling our calibrator sources directly
- DC current on Hall-effect clamps, including zero offset after the jaw is opened and closed
- Voltage and resistance functions where the meter provides them
- Frequency and inrush functions where fitted
- Jaw closure and alignment — a jaw that does not close cleanly reads low
What your certificate records
The certificate format construction procurement and audit teams ask for: the equipment under test, its serial number, the reference instruments used, as-found and as-left readings, environmental conditions and a traceability statement, plus the clamp meter-specific items below.
- As-found and as-left current readings at each test point and range
- Results for voltage, resistance and any other functions tested
- Reference current source and other standards used
- Environmental conditions at the time of calibration
Standards & frameworks in construction
- AS/NZS 3760 — In-service inspection and testing of electrical equipment
- WHS Act and Regulations (Western Australia)
- AS/NZS 3012 — Construction site wiring
- Project- and principal-contractor-specific compliance requirements
How construction clients get clamp meters to us
Calibration is performed in our Caversham lab — not on site. We collect from and deliver back to construction workshops and offices across Perth, and instruments from regional sites come by freight or via your Perth base.
- CBD and inner-Perth commercial fit-out sites
- New estate civils and house frame programs across the metro
- Industrial build projects in Welshpool / Kewdale / Canning Vale
- After-hours and weekend test & tag windows on active sites
Working with construction procurement
We work directly with project supervisors and HSEQ teams to schedule 3-monthly site test & tag rounds, calibrate commissioning tools, and supply project asset registers in the format your principal contractor wants to see.
Clamp meter calibration for construction FAQs
Do clamp meters need test and tag as well as calibration?
Do you calibrate the current clamp or just the meter functions?
How much current can you actually apply through the jaw?
Related pages
Get a clamp meter calibration quote for construction
Send us your equipment list for a fast, no-obligation quote — or call and speak to a calibration technician today.