Sponsored Links
Maximum current - amps - through a 12V circuit in combination with size (AWG) and length of wire
Electrical motor data - nominal current, fuse, start ampere, contactor and circuit breaker of asynchronous motors
American Wire Gauge - AWG - and circular mils
Convert American Wire Gauge (AWG) to square mm cross sectional area
Before products are sold within the European - EU - market, they have to be "CE-marked"
Recommended copper wire gage and transformer size for single phase - 230 Volts - electrical motors
Recommended copper wire gage and transformer size for Three Phase - 230 & 460V - electrical motors
The circular mil area - CM - is a unit denoting the cross-sectional size of a wire or cable
Converting amperage between single phase (120, 240 and 480 Voltage) and three phase (240 and 480 Voltage)
Converting from NEMA enclosure classifications to IEC enclosure classifications
The most common used electrical formulas - Ohms Law and their combinations
Sponsored Links
Online electrical motor calculator - calculate amps, hp and kVA
Calculating electric motor efficiencies
Indicating locked rotor code letters for electrical motors
Heat gain from electrical motors to the surroundings
Definition of common electrical units as Ampere, Volt, Ohm, Siemens and more.
The velocity of 2, 4, 6 and 8 poles electrical motors at 50 Hz and 60 Hz
Comparing IEC and NEMA torque classifications of electrical motors
The eight - S1 - S8 - IEC duty cycles of operating electrical motors
IP - Ingress Protection rating is used to specify the environmental protection - electrical enclosure - of electrical equipment
Apparent, True Applied and Reactive Power
Sponsored Links
Installed light power in some common types of buildings and rooms
National Electrical Manufacturers Association
NEMA has established four different designs - A, B, C and D - for electrical induction motors
General description of NEMA electrical enclosures types
The NEMA enclosure standards of electrical motors
Insulation systems are rated by standard NEMA classifications according to maximum allowable operating temperatures
Nema size starters
Calculate AWG, mil, mm, CM or square mm
Electrical power is rated in Horsepower or Watts.
A Power Factor definition and the Power Factor for a three-phase electrical motor
Properties of rechargeable batteries or accumulators
Resistivity, conductivity and temperature coefficients for some common materials as silver, gold, platinum, iron and more. Including a tutorial explanation of resistivity and conductivity
The service factor - SF - is a measure of periodically overload capacity at which a motor can operate without overload or damage
Electrical single phase equations
Slip in electrical induction motors are necessary for torque generation.
The speed of operating electrical motors with loads, are lower than the motors synchronous speed (no load)
The speed at which an induction motor will operate depends on the input power frequency and the number of electrical magnetic poles in the motor
Electrical 3-phase equations
There are some common torques used to describe and classify electrical motors
A transient is a high voltage spike caused by external or internal transient sources
A variable-frequency drive develops heat loss during work. To avoid overheating its often necessary to ventilate the location around the frequency-drive
The efficiency of an electrical polyphase motor decreases with increased voltage imbalance.
The common US wire gauges - AWG gauges
SketchUp Engineering ToolBox - enabled for use with the amazing, fun and free Google SketchUp.
© The Engineering ToolBox 2005
8 5 9