RV Outlet Residential Calculation

[Aledrell]

I'm working on a residence and finally realized one of the 200 amp subs is overloaded. Architec had 187 amp calculated using sq ft calcs and various individual motor loads. Although he forgot to include two swamp coolers and a vehicle gate and some other small things got added. I was looking at the calculations and the RV outlet is added into the calculation at 40 amps. The guy doesn't even own an RV yet but he is going to purchase one apparently. Why is this convience outlet calculated at a 100 percent?

 

[suemarkp]

Is it really 100%? RV outlets are usually 120V @ 30A or 120/240V @ 50A. You could probably argue all over as to the load for this (will it just run lights and charge the battery, or will someone be living in it while plugged in). You could also look to 551.73(A) as a basis for load. It says treat a site with a 50A circuit as a 9600VA load minimum. So I think this is where the 40A came from.

What calculation method was used -- standard or optional?

 

[Aledrell]

Is it really 100%? RV outlets are usually 120V @ 30A or 120/240V @ 50A. You could probably argue all over as to the load for this (will it just run lights and charge the battery, or will someone be living in it while plugged in). You could also look to 551.73(A) as a basis for load. It says treat a site with a 50A circuit as a 9600VA load minimum. So I think this is where the 40A came from.

What calculation method was used -- standard or optional?

Well the plans do call for a 2p50 but I at 40amps I still think this is calculated really high for something that won't get used except to charge coach every so often. Thanks for all the input would appricate more input but this question has produced few responses.