How ECalPro Validates Every Calculation

Every number we produce traces back to a specific standard clause. Here's how.

5-Step Verification Process

Every calculation passes through five independent verification stages before reaching you.

Every formula in ECalPro maps to a specific clause in a published standard. No approximations, no proprietary shortcuts — just traceable engineering.

ISO/IEC 25010:2023 — Software quality model

Every calculator output includes the source clause reference (e.g., BS 7671 Table 4D1A, AS/NZS 3008 Table 3).

Results are compared against published worked examples in standard annexes and verified against other calculation tools.

Cross-validated against jCalc reference data, ETAP published examples, and standard annex worked examples.

{{count}} automated tests run on every deployment. A single failure blocks the release.

ISO/IEC/IEEE 29119-4 — Test design techniques

5-layer test architecture: unit, boundary, parametric, cross-standard, and benchmark tests.

Calculation results are verified against real-world installations including HV switchgear, motor control centres, and protection systems.

Verified against 18+ years of field installations at Batu Hijau copper-gold mine.

When standards publish amendments, our calculation engine and tests are updated within 30 days.

Tracked: BS 7671 Amendment 2, AS/NZS 3008.1.1:2025, NEC 2026 edition.

Calculator and test coverage for each supported standard.

Standard	Region	Calculators	Tests
BS 7671:2018+A2:2022	United Kingdom, Ireland, Singapore, Malaysia	20	268	Try it
IEC 60364-5-52:2009+A1:2011	International (80+ countries)	19	218	Try it
AS/NZS 3008.1.1:2017	Australia, New Zealand	21	100	Try it
NEC (NFPA 70) 2023	United States	18	378	Try it
IEEE 1584-2018	International (USA, CA, AU, UK)	1	20	Try it
IEC 60909-0:2016+A1:2020	International (EU, ME, Asia, AU)	2	80	Try it
AS/NZS 3000:2018	Australia, New Zealand	8	65	Try it
IS 732:2019	India	5	45	Try it
IEC 61363-1:1998	Marine / Offshore	1	15	Try it
IEEE 1185-2019	International	1	18	Try it
AS/NZS 3008.1.1:2025	Australia, New Zealand	4	30	Try it

23,147

Total Tests

30+

Standards Covered

Calculators

Test Layers

eeat.quality.languages

eeat.quality.ppp_countries

90%+

eeat.quality.coverage

100%

eeat.quality.offline

Verify a cable size yourself. Every result shows the standard clause, intermediate steps, and pass/fail verdict.