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Originally published: 29/11/2017 17:00
Publication number: ELQ-64030-1
View all versions & Certificate

Cable Size Calculation Spreadsheet

Cable size calculations based on Motor Horse Power HP and Specified Current.

by Jim Nash
Lecturer at the Gordon Institute

19 reviews2,884 views|1 comment|Bookmark

cable sizecalculationselectrical engineeringexcelspreadhseet

Description
The Sheet works with a series of Input Data giving you a number of calculated Values.

Input data: Motor voltage (V L-L), Motor horsepower, Cable Temperature Rating (°C), Ambient Temperature (°C), Cable Length (ft) and Acceptable Voltage Drop (%).

Calculated Values: Operating Current (A), 125% Current per NEC (A), “Zero Length” Cable Size, Acceptable Voltage Drop (V), Actual Voltage Drop (V) and Actual Voltage Drop (%).

Please Note:

The conductor ampacities are based on NEC 2008, Table 310.16 (Not more than 3 current carrying conductors in racewary).

*Originally shared on electrical-engineering-portal*

This business tool includes
1 Downloadable Cable Size Calculations Spreadsheet

Jim Nash offers you this business tool for free!

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Reviews

• Mehedi Hassan(last updated: 22/01/2019 16:16)
  
• Eng. Ayesh Salahat, MSc.(last updated: 17/12/2018 09:05)
  
• patrick gitau(last updated: 12/12/2018 04:53)
  
• Wai Moe(last updated: 24/11/2018 15:23)
  
• Ravikanth Ijjada(last updated: 23/11/2018 03:33)
  

  Ravikanth

  Very useful
• Paddy Keys(last updated: 08/10/2018 09:41)
  
• Vidyanand Shrivastava(last updated: 06/10/2018 08:48)
  
• Alireza Nikbakht(last updated: 27/08/2018 09:18)
  
• KALAMI FAHIM(last updated: 07/08/2018 06:33)
  
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• yasser awwad(last updated: 15/03/2018 19:41)
  

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Post Comment

• 

  Paddy Keys 4 months ago
  Tool Useredit

  Hi Jim the software looks of however, we in Africa use metric ...kW metres
  etc so if you can either redo in metric or supply password to edit
  Kind Regards Paddy Keys.

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