M. D.
Senior Member
I 'm not sure what to make of them, I tend to be a tried and true kinda guy.
This is from the link that Bob provided , ...
This is from the link that Bob provided , ...
Code Rules ? Load Calculations.
For new dwellings, the service load should be calculated using NEC 220-30. For existing dwellings, the service load should be calculated using NEC 220-31. By both calculation methods, the Seisco load is generally added to the service load at 40% of it?s maximum nameplate rating. For instance, the maximum current (amp) rating of the Seisco Model RA-28 is 116 amps and 40% of this rating is about 47 amps. The 47 amps is typically the load added to the overall service load of the dwelling when using the optional calculation methods as described in NEC 220-30 and 220-31, not the maximum current rating, 116 amps.