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Compare number to array of numbers

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Posted on by Community Power Pla... Microsoft Employee

I'm trying to build an app that lets me add equipment and then automatically size the wires based on the load. However, this requires that I compare a load in amps to a chart of wire ampacities, then pick the next size up to size the wire. Is there a way to accomplish something like this in PowerApps?

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RandyHayes 76,299 Super User 2024 Season 1 on at

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@Anonymous

Yes, this can be accomplished in PowerApps. Providing exact details would require knowing more about the data.

I hope this is helpful for you.

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Community Power Pla... Microsoft Employee on at

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For a simple example, I have a list of equipment in SharePoint. Each item has a number field for amps. I then need to compare it to the wire size, using the first and third columns in this table. If the FLA is 53A, I can see that a Wire Gauge Size #6 would provide me with 65A (>53A), so I might return "#6" as a string.

I did have a second question as well, assuming that works - If I have multiple projects, each with their own SharePoint site and list of equipment, how can I set up the app so it works with all the individual lists independently?

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RandyHayes 76,299 Super User 2024 Season 1 on at

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@Anonymous

Sure, at its very basic level, the following formula would return that calculation:

With({_wires: Table({Size: "14", MaxAmps: 20}, {Size: "12", MaxAmps: 25}, {Size: "10", MaxAmps: 35}, {Size: "8", MaxAmps: 50}, {Size: "6", MaxAmps: 65}, {Size: "4", MaxAmps: 85}, {Size: "3", MaxAmps: 100}, {Size: "2", MaxAmps: 115}, {Size: "1", MaxAmps: 130}, {Size: "1/0", MaxAmps: 150}, {Size: "2/0", MaxAmps: 175}, {Size: "3/0", MaxAmps: 200}, {Size: "4/0", MaxAmps: 230}, {Size: "250", MaxAmps: 255}, {Size: "300", MaxAmps: 285}, {Size: "350", MaxAmps: 310}, {Size: "500", MaxAmps: 380}, {Size: "600", MaxAmps: 420}, {Size: "750", MaxAmps: 475}, {Size: "1000", MaxAmps: 545} )}, LookUp(Sort(_wires, MaxAmps, Descending), MaxAmps > 53, Size) )

The above formula would return "6". Of course, I would make the wire table either a list of its own (although it is pretty static in nature) or a global variable in the app (i.e. using the Set function to set a variable to the above table).

As for the individual sites and lists...you would simply need to connect your app to those lists as datasources.

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