Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Three Phase Electrical Motors

Full load amps, wire and conduit sizes for three phase electrical motors

Sponsored Links

Typical full load current, minimum wire size and conduit size for 230V and 460V three phase electrical motors:

PowerFull Load
(amps)
Minimum Wire Size
(AWG - Rubber)
Conduit Size
(inches)
(hp)(kW)230V460V230V460V230V460V
1 0.75 3.3 1.7 14 14 1/2 1/2
1.5 1.1 4.7 2.4 14 14 1/2 1/2
2 1.5 6 3 14 14 1/2 1/2
3 2.3 9 4.5 14 14 1/2 1/2
5 3.8 15 7.5 12 14 1/2 1/2
7.5 5.6 22 11 8 14 3/4 1/2
10 7.5 27 14 8 12 3/4 1/2
15 11 38 19 6 10 1-1/4 3/4
20 15 52 26 4 8 1-1/4 3/4
25 19 64 32 3 6 1-1/4 1-1/4
30 23 77 39 1 6 1-1/2 1-1/4
40 30 101 51 00 4 2 1-1/4
50 38 125 63 000 3 2 1-1/4
60 45 149 75 200M 1 2-1/2 1-1/2
75 56 180 90 0000 0 2-1/2 2
100 75 245 123 500M 000 3 2
125 94 310 155 750M 0000 3-1/2 2-1/2
150 113 360 180 1000M 300M 4 2-1/2
  • 1 hp (English horse power) = 745.7 W = 0.746 kW = 550 ft lb/s = 2,545 Btu/h = 33.000 ft lb/m = 1.0139 metric horse power ~= 1.0 KVA
Sponsored Links

Related Topics

Related Documents

Tag Search

  • en: three phase electrical motors current wire full load conduit size
Sponsored Links

Search the Engineering ToolBox

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Translate this page to
About the Engineering ToolBox!

Citation

This page can be cited as

  • Engineering ToolBox, (2009). Three Phase Electrical Motors. [online] Available at: https://www.engineeringtoolbox.com/three-phase-electrical-motors-amps-wire-d_1502.html [Accessed Day Mo. Year].

Modify access date.

Customize Ads in the ToolBox

Make ads more useful in Google Ad Settings .

. .

close

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

10 19

Sponsored Links
.