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for academic purposes I'm doing a very specific task where i need to calculate the Cell Constant of an American Non-Polarized Plug, ie, without same length the prongs. So I need to know what are the dimensions of it, namely, length, thickness,wide and distance between the probes.

I cannot get the dimensions for this plugs anywhere on the internet , only from polarized ones, so if any kind soul with one at home could give I would be very appreciated. Thank you.


marked as duplicate by The Photon, Bence Kaulics, Andy aka, Daniel Grillo, helloworld922 Jun 15 '16 at 20:11

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  • \$\begingroup\$ There aren't supposed to be any non-polarized available anywhere, except grandfathered in on very old devices. \$\endgroup\$ – Ignacio Vazquez-Abrams Jun 15 '16 at 17:57
  • \$\begingroup\$ You'll be close enough if you assume the blades of the non polarized plug are the same as the narrower blade on a polarized plug. \$\endgroup\$ – The Photon Jun 15 '16 at 18:17
  • \$\begingroup\$ There are polarized non-grounded plugs - they have the wider Neutral pin, but no ground pin. I have some power tools and a two-wire extension cord that have these plugs (No, I didn't break the ground pin off!) \$\endgroup\$ – Peter Bennett Jun 15 '16 at 18:43
  • \$\begingroup\$ What is a Cell Constant? \$\endgroup\$ – Spoon Jun 15 '16 at 19:46

I have an non-polarized adapter from by visit in the US, and can measure the dimensions for you. So these are no official values:

Thickness:           1.4mm  
Width:               6.2mm  
Length:             16.2mm  
Distance:           11.4mm
Hole diameter:       3.2mm
Distance hole - tip: 3.2mm

In addition, there's a hole of 3.2mm diameter in each probe, 3.2mm apart from the tip


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