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I just want to attach an image in response to @Denis Bourgeois 's anwer.

In summary (my take): 90.1 App. G requires factoring the impact of automatic lighting shutoff controls (re: 3 listed space types) in buildings > 500 m2:

  • by altering (in some reasonable way) typical lighting schedules in the BBD

  • the same altered schedules equally apply to the corresponding 3 space types in the PBD

I think I found the reasonable way in ASHRAE 90.1 User's Manual (2016 and 2019 versions): 10% Reduction.

image description

I just want to attach an image in response to @Denis Bourgeois 's anwer.answer.

In summary (my take): 90.1 App. G requires factoring the impact of automatic lighting shutoff controls (re: 3 listed space types) in buildings > 500 m2:

  • by altering (in some reasonable way) typical lighting schedules in the BBD

  • the same altered schedules equally apply to the corresponding 3 space types in the PBD

I think I found the reasonable way in ASHRAE 90.1 User's Manual (2016 and 2019 versions): 10% Reduction.

image description

I just want to attach an image in response to @Denis Bourgeois 's answer.

In summary (my take): 90.1 App. G requires factoring the impact of automatic lighting shutoff controls (re: 3 listed space types) in buildings > 500 m2:

  • by altering (in some reasonable way) typical lighting schedules in the BBD

  • the same altered schedules equally apply to the corresponding 3 space types in the PBD

I think I found the reasonable way in ASHRAE 90.1 User's Manual (2016 and 2019 versions): 10% Reduction.

image description

image description


AMENDMENT

The above may be wrong. The user's manual continues as follows (see blue lines). image description

It suggests that automatic shutoff controls (= automatic time-based shutoff controls) and occupancy sensors are different things. The Baseline lighting schedule for the 3 space types should be adjusted using Occupancy Sensor Reduction in Table G3.7, which brings me back to my original question. I got stuck. It's possible that the ASHRAE 90.1 User's Manual is incorrect, but I can't judge for now.