Maximum Electrical equipment heat load. Equipments includeding Electric water heater, Electric range, Washing machine, Refrigerator, Television.

You will found Electrical equipment in ASHRAE fundementals

F17. Residential Cooling and Heating Load Calculations

F18. Nonresidential Cooling and Heating Load Calculations

or ASHRAE standers 90.1 but that one special for ENERGY STANDARD FOR BLDINGS you may found the values less than the actual values 

for sure getting the actual values from catalogs it will be better