Voltage Drop Calculations Spreadsheet

[ali hassan]

Voltage Drop Calculations Spreadsheet

This voltage drop calculator will provide an approximate value for use
in project design and it is based on the following public domain
formula


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NEC Rules controlling Voltage Drop:

NEC article 210.19(A)(1) FPN No.4 and 215.2(A)(3) FPN No.2 :

These FPN’s (Fine Print Notes) suggest that a design with no more than
3% voltage drop for feeders and no more than a total of 5% voltage
drop in branch circuits to the farthest outlet will provide reasonable
efficiency at operation.
Note: Even though FPN’s (Fine Print Notes) in this case are not code
requirements but recommendations, it is still good engineering
practice to closely follow these guidelines

NEC article 647.4(D):

For Sensitive Electronic Equipment, The voltage drop on any branch
circuit shall not exceed 1.5 percent and the combined voltage drop
feeder and branch-circuit conductors shall not exceed 2.5 percent.


and This spreadsheet includes three different worksheets as follows:
Voltage Drop Calculator worksheet
Summary worksheet
Information worksheet

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to read more and download your copy , please follow the link:
http://alihassanelashmawy.blogspot.com/2012/01/siemens-voltage-drop-calculations.html