EReese
Member
- Location
- Spokane, WA
I am currently trying to redo some standards at work. The old standards were hand calculated and there is no trail. The wire sizes used are multiplex wire sizes such as #4 Al TX (triplex) and 2/0 Al TX. There is an excel sheet with all of the information. However, I need to add and delete some wire sizes but I don't know how to find the reactance in ohms/kft for multiplex wiring. Mostly i just need triplex. There is an equation in excel I can see, but I do not know how they came to the equation at all. Can anyone tell me where I can look to find the correct equations or give me any advise?
The equation that is currently in the excel sheet is:
= 0.377*(0.1404*LOG10(Overall Diameter/Conductor Radius))+ 0.0153
I don't know where any of the constant numbers are. And also in most places I look, I have the GMR and the conductor diameter. So I am hoping there is a way to use these to calculate it rather than the overall diameter.
Thanks to anyone that can help or tries to help.
The equation that is currently in the excel sheet is:
= 0.377*(0.1404*LOG10(Overall Diameter/Conductor Radius))+ 0.0153
I don't know where any of the constant numbers are. And also in most places I look, I have the GMR and the conductor diameter. So I am hoping there is a way to use these to calculate it rather than the overall diameter.
Thanks to anyone that can help or tries to help.