Check the arithmetic.
These examples compare the calculation engine against independently specified numerical expectations. This page displays the actual engine result; it does not replace a licensed design review.
| Tool | Basis | Expected | Actual | Check |
|---|---|---|---|---|
| Ohm’s law calculator | I=120/24; P=120²/24 | 5.000 / 600.000 | 5.000 A / 600.000 W | Pass |
| Voltage drop calculator | 2×20×0.0225×30/4 = 6.75 V | 6.750 / 2.935 | 6.750 V / 2.935 % | Pass |
| Conduit fill calculator | 4×(5.3848/20.9296)²×100 | 26.478 / 17.028 | 26.478 % / 17.028 mm | Pass |
| Motor synchronous speed calculator | 120×50/4 | 1500.000 | 1500.000 rpm | Pass |
| Motor slip calculator | (1500−1440)/1500×100 | 4.000 | 4.000 % | Pass |
| Motor FLA calculator | 10×745.7/(√3×480×0.85×0.9) | 11.725 | 11.725 A | Pass |
| Generator sizing calculator | (3500+1750)×1.2 /1000 | 5250.000 / 6.300 | 5250.000 W / 6.300 kW | Pass |
| Transformer sizing calculator | √3×208×100/1000; ÷0.8; next three-phase size 75 kVA; 75000/(√3×480) | 36.027 / 45.033 / 75.000 / 48.036 / 90.211 | 36.027 kVA / 45.033 kVA / 75.000 kVA / 48.036 % / 90.211 A | Pass |
| Breaker size calculator | 24×1.25+10; 40 A is a standard rating | 40.000 / 40.000 | 40.000 A / 40.000 A | Pass |
| Fuse size calculator | 27×175%; next 50, lower 45; 27×225% ceiling, largest standard 60 | 47.250 / 50.000 / 45.000 / 60.750 / 60.000 | 47.250 A / 50.000 A / 45.000 A / 60.750 A / 60.000 A | Pass |
| Ampacity calculator | √((90−40)/(90−30)); 55×k×0.8 | 0.913 / 40.166 / 40.166 | 0.913 / 40.166 A / 40.166 A | Pass |
| Admissible specific energy of cable (k²S²) | 115²×4²; 1000²×0.1; 1000√0.1/115 | 211600.000 / 100000.000 / 2.750 | 211600.000 A²s / 100000.000 A²s / 2.750 mm² | Pass |
| Voltage divider calculator | 12×2000/(1000+2000) | 8.000 | 8.000 V | Pass |
| Motor efficiency calculator | 4.5/5×100 | 90.000 | 90.000 % | Pass |
| Battery life calculator | 100×0.8×0.9/5 | 14.400 | 14.400 h | Pass |
| Resistor for LED calculator | (12−2)/0.02; (12−2)×0.02 | 500.000 / 0.200 | 500.000 Ω / 0.200 W | Pass |
| Analog signal range converter | (12−4)/(20−4)×100 | 50.000 | 50.000 | Pass |
| SMD resistor code decoder | 10×10² | 1000.000 | 1000.000 Ω | Pass |
| Capacitor code decoder | 10×10⁴ pF | 100000.000 | 100000.000 pF | Pass |
| Electricity cost calculator | 2×4×30; 240×0.25 | 240.000 / 60.000 | 240.000 kWh / 60.000 currency | Pass |
Run npm test in the project folder for these cases plus invalid-input, routing, region and invoice checks. A passing arithmetic test is not code certification.