Hello,
I'm somewhat familiar with the use of different electrical metal conduits (e.g. RMC and EMT), but I'm wondering what additional procedures are required when making up connections outdoors. A few questions:
1) For an overhead connection to a box (enclosure), a hub is typically held onto the top of the box by 4 screws. Is the mating of the two metal surfaces raintight, or is an additional washer or silicone needed between the two surfaces?2) For a threaded RMC connection, is any silicone or other thread sealant required?
3) When making an RMC connection to a knockout at the bottom of a box (enclosure), is the use of two locknuts sufficient, or is a different termination fitting required?Thanks, Wayne