What is the major difference in the number of lamps between Fixture Type M and Type N?

The major difference in the number of lamps between Fixture Type M and Type N is that Type N is designed to utilize only one lamp, while Type M accommodates two lamps. This design distinction influences not only the lighting output but also the fixture's application and installation considerations.

Type M's configuration with two lamps typically allows for a brighter output and is well-suited for larger spaces or areas requiring more illumination. On the other hand, Type N, utilizing only one lamp, is more appropriate for smaller areas or tasks where lower lighting levels are sufficient. Understanding the specific use cases for these fixture types is essential, as it impacts how and where they are deployed in various environments. This knowledge is significant for electricians and designers when planning lighting layouts.