The diagram below can be used to estimate power vs. amps and voltage when charging electrical vehicles with DC or single/three phase AC current.
Typical Charging Stations for Electrical Vehicles
Power vs. voltage and current for typical charging stations are indicated in the diagram below:
Example - Small Charging Station
From the diagram above - a small single phase AC 230V 16 amps charging station can deliver max 3.7 kW.
Example - Fast Charger
Current battery systems for electric cars typically use voltage levels between 200 and 800 V.
From the diagram above - a DC 400 V 125 amps fast charger can deliver max 50 kW.
Electric Power Nomogram
The nomogram below can be used to estimate power vs. voltage and ampere.
Electrical units, amps and electrical wiring, wire gauge and AWG, electrical formulas and motors.
Maximum wire lengths vs. currents in the 12 volt electrical system of a car.
Power, torque, efficiency and wheel force acting on a car.
Adhesion and tractive force between car wheel and surface.
Car acceleration calculator.
Calculate amps, hp and kVA for electrical motors.
Electric motor output power and torque vs. rotation speed.
Commonly used electrical formulas like Ohms Law and more.
Full load operating torque vs. break down, pull up and locked rotor torque.
Calculate electric motors shaft power.
Convert between energy consumption units like miles/kWh and kWh/100 km.
Electric vehicle range vs. battery size, SOC - state of charge and energy consumption.
Cylinder volume and compression ratios in piston engines.
Rolling friction and rolling resistance.
Convert between single phase (120, 240 and 480 Voltage) and three phase (240 and 480 Voltage).
Power equations for single phased electrical systems.
Full load amps, wire and conduit sizes for three phase electrical motors.
Electrical 3-phase equations.
Speed (km/h) vs. time (hours) and distance traveled (km).