electrical.amps_to_kw

Three distinct suites: educational examples on the calculator page, this legacy regression count (16/16 golden + boundary), and the CVP verification suite below. They are not the same number. Property, metamorphic, round-trip, O3, and interface statuses/checks are recorded in the CVP Manifest . SKIP (0/0) means that suite has no published vectors.

This calculator CURRENT · Public schema 1.4.3 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓

CVP verification suite

Protocol checks from the Evidence Manifest. Distinct from the legacy regression suite above. Verification revision 2026-09-10.evidence-semantics. Calculation version 1.4.3. CVP 1.0.0-proposed. 7/7 golden · 4/4 CVP boundary · 6/6 invalid · 5/5 property · 6/6 metamorphic · 6/6 round-trip · 1/1 cross-interface · 2/2 cross-calculator · 34/34 CVP contract. digest 1fc8b58b8507. ≤2 ULP vs this O2 module on the published golden, near-singularity boundary, round-trip, and metamorphic vectors. Computational fidelity: ULP vs O2. Engineering interpretation: exact deterministic algebraic model; measurement uncertainty is outside calculator scope. Not a whole-domain guarantee (overflow, denormals, or unlisted V→0 neighborhoods). O2 shares Node/V8 binary64 with the IUT; O3 is not required this wave.

• Golden (oracle-backed) 7 / 7
• CVP boundary 4 / 4
• Invalid input 6 / 6
• Property 5 / 5
• Metamorphic 6 / 6
• Round-trip 6 / 6
• Cross-interface 1 / 1
• Cross-calculator 2 / 2
• CVP contract 34 / 34
• Interfaces PASS · UI (SSR) / REST / MCP
• Interface claim ui-ssr is query-result HTML, not a live browser session.
• Assurance Engineering

• contract page version PASS
• contract capability version PASS
• contract input schema version PASS
• contract output schema version PASS
• evidence version matches manifest PASS
• schema valid input executes PASS
• engine success output validates schema PASS
• schema rejects incomplete input PASS
• operation input oneof PASS
• factor not in canonical schema PASS
• output units include kw and a PASS
• operation a kw schema valid PASS
• operation kw a schema valid PASS
• operation dc omits pf PASS
• operation dc rejects power factor PASS
• operation requires mode PASS
• operation rejects factor PASS
• operation ac requires power factor PASS
• operation a kw unit kW PASS
• operation kw a unit A PASS
• output mode unit binding PASS
• operation result matches detail PASS
• operation formula matches system PASS
• versioned schema pin PASS
• versioned schema id PASS
• jsonld valid json PASS
• jsonld type webapplication PASS
• jsonld name match PASS
• jsonld canonical url PASS
• jsonld software version match PASS
• jsonld system semantics PASS
• jsonld offer free match PASS
• jsonld breadcrumb match PASS
• jsonld visible content match PASS

Fingerprint sha256:efe17d16f1cee0557a8485a5ad6b47260cde93de783eca46403df7b744206399

Input schema sha256:1c75b76701130204769f10dd9f62bcc89d62d36d3551bbfbb00fcfdd362a412c · Output schema sha256:910992de9e00b5727f5c85689adf1d565c3eab3a0a467055c893403dd631c190 · Build-time SHA-256 digests prove published artifacts agree with each other (release_integrity.scope=workspace). Production attestation GETs canonical URLs twice (public/cached view and origin), including Capability HTML, via npm run attest:production --write (published at /.well-known/calculatorx-production-attestation.json) and fails if the public Capability page advertises a different calculation_version. This is artifact consistency, not an independent immutable release log.

Tool

amps-to-kw

Engine

amps-kw

Engine build

2026-09-10

Evidence core

2026-09-07T02:30:56.872Z

Rendered

2026-09-16T22:03:43.704Z

Last reviewed

2026-09-05

Assumptions

• Balanced three-phase when AC 3φ (L-L) is selected.
• Voltage is RMS for AC.
• DC does not use power factor. AC uses total power factor λ on real power.

Limitations

• DC, single-phase AC, or balanced three-phase L-L only
• DC payloads must omit power_factor
• Not for unbalanced three-phase
• Not for line-to-neutral three-phase as a selectable mode
• AC power_factor must be in (0, 1] — no soft coerce
• V ≤ 0 → VOLTAGE_MUST_BE_POSITIVE
• factor is an implementation constant (0.001) and is not an Agent input