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Revit MEP: Wire Length Calculations

Tuesday, January 1st, 2013

(Part of our ongoing series comparing features in Revit MEP and Design Master to make it clear why our software is better.)

Both Design Master Electrical and Revit MEP calculate feeder and branch circuit wire lengths in order to calculate voltage drop. In Design Master Electrical, we also use this for fault current calculations, though mentioning Revit MEP can’t do that isn’t the purpose of this post.

Rather, we wanted to mention the difference in how we calculate the wire lengths.

In Revit MEP, the wire length is the sum of the distances along the X, Y, and Z axes. That’s great when you are calculating a length inside a building, but what about underground wires? There’s no option to calculate straight-line distances.

In Design Master Electrical, we give you the choice for how to calculate the wire length. You can calculate it based upon the distances along the X, Y, and Z axes, but you can also calculate it based upon the straight-line distance. The calculation method can be specified for each circuit, allowing you to control how your calculations are performed.

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