Electrical Calculations is the best app in the electrical sector, it has several calculations that can help you in your work. Can’t miss on your smartphone!

Main calculations:
Wire Size Current Voltage Drop Active/Apparent/Reactive Voltage Power Factor Resistance Maximum Wire Length Current Carrying Capacity of Insulated Conductors/Bare Conductors/Bus Bars Conduit Filling Circuit Breaker Sizing Allowable Cable Power Pass (K²S²) Operating current Reactance Impedance Power factor correction MV/LV transformer power factor correction Capacitor power at different voltages Grounding system Short-circuit current Conductor resistance Calculation of cable temperature Energy losses in cables Temperature sensors (PT/NI/CU NTC thermocouples…) Values of analogue signals Joule effect String current failure Risk assessment of atmospheric overvoltages.

Electronic calculations:
Color code of resistor / inductor Fuses Sum of resistors / capacitors Resonant frequency Voltage divider Current divider Zener diode as voltage stabilizer Resistor to reduce voltage Resistor for led Battery life Transformer primary/secondary winding CCTV antenna length hard disk/tape.

Engine calculations:
Efficiency Three-phase to single-phase motor Single-phase capacitor starter Motor speed Motor slip Maximum torque Full-load current Three-phase motor diagrams Insulation class Motor connections Motor terminal markings.

Conversions:
Power Table Δ-Y AWG/mm²/SWG Imperial / Metric Conductor Size Comparison Section Length Voltage (Amplitude) sin/cos/tan/φ Power Temperature Pressure Ah/kWh VAr/µF Gauss/Tesla RPM-rad/s-m/ s Frequency/Angular Velocity Torque Byte Angle.

Resources:
Fuse Application Categories UL/CSA Fuse Class Standard Resistor Values Tripping Curves Cable Reactance Table Resistivity and Conductivity Table Unit Voltage Drop Table Cable Dimensions and Weight Protection Classes IP/IK/NEMA Atex Marking Classes Appliance numbers CCTV resolutions Thermocouple data and color codes ANSI standard device numbers Electrical symbols Worldwide electricity Types of plugs and sockets IEC 60320 connectors C-Form connectors (IEC 60309) Nema connectors EV charging plugs Battery color codes wiring SI prefixes Units of measure Tube dimensions.

Pinouts:
Wiring Ethernet (RJ-45) Ethernet with PoE RJ-9/11/14/25/48 Scart USB HDMI VGA DVI RS-232 FireWire (IEEE1394) Molex Sata Apple Lightning Apple Dock Connector DisplayPort PS/2 Fiber Optic Color Code led Raspberry PI ISO 10487 (car audio) OBD II XLR (audio/DMX) MIDI Jack RCA color coding Thunderbolt SD Card Sim Card LCD Display 16×2 IO-Link.

The app also contains a very useful form.

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