Mike M wrote:
Here in Washington State if its a commercial Job is 2.3 watts per
square foot for a carpenty shop which is about the highest allowed for
any occupancy.


If they do not take the lamp source into consideration, the above makes
no sense at all.

Consider the following:

Incandescent: 18-20 lumens/watt on average.
Fluorescent: 60-70 lumens/watt on average.
Sodium vapor: 125 lumens/watt on average.

Those are initial values, but demonstrate the variation in efficiency of
various lamp sources.

It is lumens on the work surface, not watts, that are important.

Lew