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.