New in the 2020 Code book is an adjusted “General Lighting Load Table “ for most types of occupancies except for dwelling units. The lighting loads have been changed to new “VALUES” based on how much lower the wattage is for new LED lighting being installed. The table shown below is just a sample of the table and not the complete one. The values are drastically reduced and include the 125% for continuous load factors. Just as the Table states it covers all occupancies except dwelling units, dwelling units will be covered in section 220.14(J), which is also new to the Code book. You will find the the general lighting loads are a lot smaller now for non-dwelling load calculations which will reduce the size of the lighting loads to large buildings, which will lend help with other new loads that we are seeing such as car chargers. There are several notes that go with the table to explain which lighting loads go with which type of occupancy. In the table the far righthand column is the VA per square foot number that we will use figure the general lighting load.
Note: The 125 percent multiplier for a continuous load as specified in 210.20(A) is included when using the unit loads in this table for calculating the minimum lighting load for a specified occupancy.
a Armories and auditoriums are considered gymnasium-type occupancies.
b Lodge rooms are similar to hotels and motels.
c Industrial commercial loft buildings are considered manufacturing-type occupancies.
d Banks are office-type occupancies.
e Garages — commercial (storage) are considered parking garage occupancies.
f Clubs are considered restaurant occupancies.
g Barber shops and beauty parlors are considered retail occupancies.
h Stores are considered retail occupancies.
Till next time be safe work safe
Jake