Applying a Demand Factor

You can use the Demand Factor dialog to create and apply demand factor types.

1. Click Manage tabSettings panelMEP Settings drop-down Demand Factors.
2. Click to create a new demand factor or select an existing one.
3. Assign a demand factor using one of the following methods:

   Apply a constant demand factor

   You can apply a constant demand factor to the loads regardless of their values. A constant demand factor is the default for any newly created demand factor, and the default calculation method if a demand factor is not specified for a load classification.

   1. For Calculation method, select Constant.
   2. Accept 100% or enter another demand factor percentage.

   Apply a demand factor based on a total quantity

   You can assign the demand factor to be based on the number of connected objects. For example, if there are two items, all loads are calculated at 100%. If there are ten items, then all loads are calculated at 65%.

   1. For Calculation method, select By quantity.
   2. For Calculation options, select Total at one percentage.
   3. Click to add row(s) for additional objects.

      The table displays the demand factor for each row of objects.

   Apply a demand factor based on quantity ranges

   You can assign the demand factor to be based on a percentage that varies as the quantity of objects increases. You can specify that the demand factors are calculated incrementally for different ranges.

   For example, you can specify a demand factor for the first 60 connected objects, and then specify another demand factor for the next 40 connected objects (61 to 100, etc.).

   1. For Calculation method, select By quantity.
   2. For Calculation options, select Incrementally for each range.
   3. Click to add row(s) for additional objects.

      Each range represented by a row will be summed.

   4. The table displays the demand factor for each row of objects.

   Assign a demand factor based on total load

   You can assign a demand factor based on the total number of objects attached to a panel. Total load calculates the entire load at that demand factor.

   For example, if the total load is under 100 VA the loads are calculated at a demand factor of 100%. If the total load is 300 VA, then the loads are calculated at 65%.

   1. For Calculation method, select By load.
   2. For Calculation options, select Total at one percentage.
   3. Click to add row(s) for range of loads.

      The table displays the demand factor for each row of loads.

   Apply a demand factor based on ranges of loads

   You can assign demand factors that are calculated incrementally for different ranges of loads.

   For example, you can specify a demand factor of 50% for the range between 0 to 20,000 VA, and a demand factor of 25% for the range between 20,001 and 30,000 VA.

   1. For Calculation method, select By load.
   2. For Calculation options, select Incrementally for each range.
   3. Click to add row(s) for range of loads.

      Each range represented by a row is summed.

4. Optionally, select Add an additional load to the calculated result.