Electrical Calculations - Current is Not Correct

[shockley.jd]

I have not seen this addressed anywhere else, but have noticed that Revit's electrical current calculations are incorrect and have been since at least 2013. I have made custom panel schedules with my own calculations to make it show up right, but since no-one else seems to have noticed and it hasn't been fixed in this many versions, I'm starting to wonder if I just don't understand the parameters or am missing a setting somewhere.

I created a schedule based on a dummy project (Revit 2020) with 120V circuits that I set up as an example, image attached. The first column is the Apparent Load Phase A parameter for each circuit, second is Apparent Current Phase A, straight from Revit. The third column is a calculated parameter with the formula: Apparent Load Phase A / 120V, which gives the actual current for the load. Notice that five of them match Revit's number, but the rest are off by varying amounts. My thought was that maybe Revit is using another number for the voltage, like 115V or 110V, so I added a fourth column that backs out what voltage Revit would be using to come up with the current it's calculating, using the formula: Apparent Load Phase A / Apparent Current Phase A. This gives varying voltages that seem to have some sort of pattern, but I can't figure out anything.

Has anyone noticed this or figured out what the issue is?

[shockley.jd]

Not sure how to attach an image...trying again...

Capture.JPG

[Eddy B]

Hi Shockley,

That's interesting. Can you post the dummy project you've set up?

Thanks,

[shockley.jd]

Unfortunately I can't share the project as it's a proprietary template. I think Revit's numbers may be correct, see discussion on this forum:

https://forums.autodesk.com/t5/revit...s/td-p/9666873

- - - Updated - - -

https://forums.autodesk.com/t5/revit...s/td-p/9666873