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Please check the below sentence as our Client requirement.
"Instrument enclosures and junction boxes having an internal volume exceeding 2,000 cm³ shall be provided with Type 300 Series stainless steel breather and drain fittings, or a combination."
Why it is so? I mean what is the purpose of breather and drain? Why only JB with volume exceeding 2,000 cm³ requires those?
"Instrument enclosures and junction boxes having an internal volume exceeding 2,000 cm³ shall be provided with Type 300 Series stainless steel breather and drain fittings, or a combination."
Why it is so? I mean what is the purpose of breather and drain? Why only JB with volume exceeding 2,000 cm³ requires those?