I am sure this has come up before. The NEC requires that all luminares and lampholders shall be listed. There are some retailers that have unlisted lighting fixtures or enclosures (step lights), but have listed components, ie the ballast, light socket, connectors and wire. I have seen the same style of lights by other retailers that are fully listed fixtures that are similar in construction. I see that NEC 410.6 requires all luminares and lampholders to be listed. The definition of luminare under article 100 doesn't seem to cover lighting enlcosures themselves. I am wondering if the entire light fixture is required to be listed and whether some companies are cutting corners. Any feedback would be appreciated.