Electrical Calculations

This app contains electrical calculations, electronic calculations, lighting calculations, motor calculations, conversions and pinouts.

Electrical:

Calculation of Wire Size

Calculation of Voltage Drop

Calculation of Voltage

Calculation of Current

Calculation of Power

Calculation of Power Factor

Calculation of Resistance

Calculation of Impedance

Calculation of Reactance

Calculation of Impedance (from Resistance and Reactance)

Conductor Resistance

Maximum Wire Length

Sizing the Circuit Breaker

Current Carrying Capacity of Insulated Conductors

Current Carrying Capacity of Bare Conductors

Calculation of Cable Temperature

Calculation of Power Losses in Cable

Admissible Let-Through Energy of the Cable (K²S²)

Short-Circuit Current Min

Neutral Current

Earthing System

Lightning Protection Level

Risk Assessment of Overvoltages with Atmospheric Origin

Capacitor Power at Different Voltage

Power Factor Correction

Power Factor Correction of Transformer MV/LV

Primary/Secondary Winding of Transformer

Electronics:

BJT DC Analysis

BJT AC Analysis

FET DC Analysis

FET AC Analysis

Filter Calculator

Op-Amp Calculator

NE555 Calculator

Voltage Regulator Calculator

Voltage Divider

Current Divider

Resonant Frequency

Wheatstone Bridge

Zener Diode as Voltage Stabiliser

Resistance to Reduce Voltage

Resistance for LED

Battery Life

UPS Battery Size and Runtime

Temperature Sensors

Antenna Length

Basics:

Connection of Resistor

Connection of Inductor

Connection of Capacitor

Standard Resistor Values

Resistor Color Code

Resistor Colors from Value

Inductor Color Code

SMD Resistor Code

Capacitor Code

Table of Capacitor Codes

Table of Inductor Codes

Fuses Color Code

Lighting:

Calculation of Total Flux

Calculation of Luminaires Number

Illuminance on the Surface

Power Supply for Strip LED

Color Codes of Fluorescent Tubes

Solar:

PV String Sizing

Fault Current of Strings

Motor:

Calculation of Motor Current

Calculation of Motor Power

Calculation of Motor Power Factor

Calculation of Motor Efficiency

Calculation of Motor Torque

Calculation of Motor RPM

Calculation of Motor Slip

Motor Power Factor Correction

Motor from Three-Phase to Single-Phase

Motor Single-Phase Starting Capacitor

Motor Voltage Unbalance

Motor Current Unbalance

Motor Insulation Class

Motor Terminals Marking

Diagrams of the Three-Phase Motor

Conversions:

Δ-Y (Delta/Star)

kWh-Ah

Power

Voltage

Section

Trigonometric

Angle

Angular-Linear Velocity

Length

Energy

Pressure

Torque

Magnetic

Temperature

Volume

Weight

Time

Luminance

Illuminance

Lumens-Lux

Lumens-Watts

Lumens-Candela

Lux-Watts

Lux-Candela

Lux-Foot Candle

Luminance-Exposure Value

Illuminance-Exposure Value

RGB-CMYK

RGB-HEX

Kelvin-RGB

Resources:

IP/IK/NEMA Protection Classes

Power Distribution Systems (TT, TN, IT)

ATEX Marking

Appliance Classes

UL/CSA Fuse Classes

Fuses Application Categories

Tripping Curves

Wire Size Conversion Table

Imperial/Metric Conductor Size Comparison Table

Table of Cables Reactance

Table of Resistivity and Conductivity

Table of Unitary Voltage Drop

SI Prefixes

Units of Measurement

CCTV Resolutions

Pipes Dimensions

Thermocouple Color Codes

Wiring Color Codes

Fiber Optic Color Code

Electricity Around the World

Plug and Socket Types

EV Charging Plugs

Types of Lamp

Fittings of Lamp

Bulb Shapes

Table Luminous Efficacy

SMD LED

Generic Tables for Power Factor Correction Lamps 220V

Unified Glare Rating

Color Rendering Index

Color Temperature

Visible Spectrum

Pinouts:

Ethernet Wiring

Power over Ethernet

Registered Jack

USB

RS-232

FireWire

Molex

SATA

PS/2

HDMI

DisplayPort

VGA

DVI

SCART

S-Video

XLR

MIDI

Jack

RCA

ISO 10487

OBD II

Apple Lightning

Apple Dock Connector

Thunderbolt

SD Card

SIM Card

Raspberry PI

LED

LCD

IO-Link

IEC 60320 Connectors

IEC 60309 Connectors

Nema Connectors