What is the maximum weight of a vertically mounted luminaire that can be supported to a device box or plaster ring?

The maximum weight of a vertically mounted luminaire that can be supported by a device box or plaster ring is 6 lbs. This requirement ensures safety and stability for the luminaire installation. Lightweight fixtures can be adequately supported by standard device boxes or plaster rings, which are typically not designed to handle heavier loads.

When considering fixture weight, it's necessary to note that the boxes and rings used must be specifically rated for the weight they are expected to support. For luminaires over the 6 lbs threshold, additional support methods must be implemented, such as using a heavier-duty junction box or a mounting bracket that is designed to handle higher weights. This code stipulation is in place to prevent failures that could lead to accidents or injuries.