I have a control panel "hermetically sealed" (purged) in a class 1 DIV 2 area. By the NEC I know that seal-offs are not required. How ever we have them installed at the panel per the owner.
Some of the seal-offs are @ 20" from the panel, some people are stating that if we do install them then they have to be within 18" of the panel.
I am stating being they are not required per NEC they do not have to be within the 18" limit.
Some of the seal-offs are @ 20" from the panel, some people are stating that if we do install them then they have to be within 18" of the panel.
I am stating being they are not required per NEC they do not have to be within the 18" limit.