The requirement states that “Any automatic control device required … shall either be manual on or shall be controlled to automatically turn the lighting on to not more than 50% power”
Assuming that we have an open plan space that is larger than 10 000ft2, we require one manual or automatic control device per 10 000ft2 (9.4.1.2c).
The proposal is the split the 10 000ft2 space into small 100ft2 zones (about 4 – 6 desks) and provide a motion sensor in each zone. This way the multiple automatic control devices only switch on 1% of the power of the space each, meeting the “<50% power for automatic on” requirement.
Would this meet the intent?
