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1. Electrical Engineering Salary Calculator
2. Electrical Engineering Salary
3. Electrical Engineering Calculator Program
4. Engineer Calculator Online
5. 3 Phase Motor Cost Calculator

'Electrical enginering calculator PRO v1.0' has 60 solutions for basic electrical engineering problems. At the bottom of this page, you could find the Google Play download links for FREE and PRO versions.
The topics will be as following:
***Basic calculations***
Brightness level
Luminance
Inductor voltage
Capacitor voltage
Impedance value
RMS voltage of sinusoid
Power in single phase AC circuit
Apparent power
Voltage in Δ-Y transformation
Voltage in Y-Δ transformation
Impedance in Δ-Y transformation
Impedance in Y-Δ transformation
Current in Δ-Y transformation
Current in Y-Δ transformation
Synchronous speed in revolutions per minute
Synchronous machine maximum power
The conventional efficiency of a transformer
Maximum efficiency of a transformer
DC resistance of a conductor
Capacitor dissipation factor
Inductance value for a core with airgap
***Finite elements***
Free-step two-dimensional random walk
Free-step three-dimensional random walk
Voltage determination on X-Y coordinate system
Voltage determination on polar coordinates
***Photovoltaic systems***
Energy consumed at worst day
Energy consumed(average case)
Power at MPP
Average energy consumed by a PV system

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Series and parallel PV module number calculator
Declination angle
Hour angle
Position of sun
Intensity of radiation
Energy density
Zenith angle
Sun rise angle
Sun set angle
Azimuth angle
PV array parameters
Local solar time meridian
Equation of time (EoT)
***Power electronics***
1-phase half-wave uncontrolled rectifier voltage
1-phase half-wave controlled rectifier voltage
1-phase full-wave bridge rectifier voltage
***Power transmission***
Rupture stress
Ice load
Vibration frequency on a transmission line
Effective height of protection conductor
***Power production***

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Three-phase nominal power
Three-phase active power

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Three-phase reactive power
Economic voltage
Power of wind
Capacity factor
Annual plant cost
Annual production cost
Annual total cost
Cost of 1kWh energy
Water plant power and annual energy production.

Below tool will assist to perform conduit sizing calculation.

Engineer Calculator Online

RESULT

Total Cable Area:

Total Conduit Area:

Calculated Percent Fill:

Allowable Percent Fill:

RGS or RMC Conduit Size:

The type of conduit applicable is Rigid Steel Conduit (RGS) and Rigid Metal Conduit (RMC). RGS or RMC sizing will be in compliance with table 1 of NEC Chapter 9:

where:

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Also read: Voltage Drop Calculation

Conduit sizing calculation result is based on normal conditions of good practice cable routing and alignment of conductors. For example, the total number of bends between 2 pull points can not exceed 360^o or the maximum number of conductors in a connection box.

Conduit size, internal diameter and internal total area is as below: