WFCO has two “big” categories of products for power converters 1) Power Converters integrated into distribution panels and 2) Power converters that you just bolt/screw to the floor of something.
This particular table is for the distribution panel type of converter. The IDEA behind this chart is to make it very easy for you to find the converter you need, in the power level you need, and understand how that converter “fits” in the context of all WFCO products.
If you need a calculator to show you the size of the power converter you need then click on this link.