Maximum Number of Network Light Bulbs
Testing shows you should network no more than 250 light bulbs to maintain reliable performance.
There is a limit to the number of light bulbs at which the performance of the Remote Network Lighting begins to decrease. For example, the time it takes a light bulb to respond may start to increase if too many light bulbs are installed on the lighting network. Testing has shown that the lighting network should be limited to a maximum of 250 light bulbs to maintain reliability in performance.
Switchboards, panel-boards, industrial control panels, and motor control centers that are in other than dwelling occupancies and are likely to require examination, adjustment, servicing, or maintenance while energized shall be field marked to warn qualified persons of potential electric arc flash hazards