The table is based on the premise that you know the nameplate ratings of the ranges, whether an individual dwelling or multi-dwelling.
Realistically how often is that known? Normal practice that has been used in my experience, from apprentice through j-man and master, is to run a 40 or 50 amp circuit and install a 50 and 4-wire receptacle without ever knowing the kW rating of the range.
Granted, if it's a higher end home that has wall mounted ovens and separate cooktops you usually have specific info from GC or architect.
When doing load calcs where you don't have nameplate info, how do you "properly" use the table?
Whether you're using the standard or optional methods calcs are based on nameplate ratings...
I understand how to answer a test question regarding a range Calc, I'm just talking real world scenarios. If you have a 20 unit dwelling are you going to really know the nameplates for all those units? Or are you going to run 20 - 40 amp circuits (receptacles)? And how do you do a load Calc without knowing the nameplates?
Realistically how often is that known? Normal practice that has been used in my experience, from apprentice through j-man and master, is to run a 40 or 50 amp circuit and install a 50 and 4-wire receptacle without ever knowing the kW rating of the range.
Granted, if it's a higher end home that has wall mounted ovens and separate cooktops you usually have specific info from GC or architect.
When doing load calcs where you don't have nameplate info, how do you "properly" use the table?
Whether you're using the standard or optional methods calcs are based on nameplate ratings...
I understand how to answer a test question regarding a range Calc, I'm just talking real world scenarios. If you have a 20 unit dwelling are you going to really know the nameplates for all those units? Or are you going to run 20 - 40 amp circuits (receptacles)? And how do you do a load Calc without knowing the nameplates?
