Calculator Electric - I7 & IEC

Professional Electrical Calculator for ANRE certified electricians, installers and engineers in Romania.

The only calculator with complete Romanian standards:

✓ Normative I7 — electrical installations in buildings

✓ IEC 60364-5-52 — installation methods A1–G

✓ IEC 60909 — short-circuit calculation

✓ PE 116 / NTE 007 — earthing points

✓ IEC 60364-7-712 — photovoltaic installations

✓ ANRE 2024 procedures — prosumer connection

✓ VDI 2078 — cooling requirements for technical spaces

BASIC CALCULATIONS — FREE:

- Cable section — Cu/Al, PVC/XLPE, methods A1–G, k1×k2 manual

- Voltage drop — ΔU single/three-phase, BMP/transformer/motor limits

- Circuit breaker — B/C/D curves, cable length check

- Power and current — P, Q, S, I, cos φ

- Resistor color code — 4–6 IEC bands 60062

- Converter — AWG↔mm², Delta↔Star, kW↔HP, °C↔°F

- Cos φ compensation — kVAr, capacitor capacity

- Cable temperature at short circuit

- Maximum cable length

- Battery autonomy — DoD, efficiency

- Connector pinout — RJ45, USB, HDMI, RS-232, XLR

- IP/IK/NEMA grades — complete table

- Electrical symbols — SR EN 60617

- Distribution diagrams — TT, TN-C, TN-S, TN-C-S, IT

ADVANCED CALCULATIONS — PRO:

- Photovoltaic calculator — DC strings, production 41 PVGIS counties

- Electric motor — rated current, Y-Δ, VFD, connection diagrams

- Short circuit — Icc, K²S², single/three-phase IEC 60909

- Earthing — vertical/horizontal/plate electrodes

- Neutral current — unbalanced load

- Cooling required — VDI 2078, technical spaces

- Conduit bending — offset, 90°, saddle

- Tube filling — 40% I7 verification

- ANRE 2024 checklist — 10 steps for PV prosumer connection

- Material estimate — with 21% VAT

- Work cost estimate — labor + materials + profit

- Professional PDF export — with your company's letterhead

- Saved projects

- I7 Normative Guide — practical explanations with examples

PRO SUBSCRIPTIONS:

- Monthly: €1.99/month

- Annual: €9.99/year (savings 58%)

- Promo code: directly from the application

WHY ELECTRICAL CALCULATOR - I7 & IEC:

✓ 100% offline — works without internet

✓ No account required — you start instantly

✓ 4 languages: Romanian, English, Spanish, Italiano

✓ Formulas verified according to current regulations

✓ Real PVGIS data for all counties of Romania

✓ Export PDF with your company letterhead

✓ Landscape support for tablets

Ideal for: ANRE certified electricians, PV installers, design engineers, electrical engineering students, electrical panel technicians.