Equipment rated as an “assembly “

[bubbarhd]

When does an enclosure with, say, 4 modules or relays and an enclosure heater become an assembly and need to be rated as such? What is the tipping point in code? Is there an NEC reference?



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[GoldDigger]

Duplicate. See http://forums.mikeholt.com/showthread.php?t=195197&p=1962216#post1962216