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Electrical equipment exception applicable for VRLA batteries?

Question asked by rleveille on Feb 2, 2018

Doing a UPS room and was looking to take advantage of the electrical equipment exception provided in 8.15.11.2. One of the conditions of the exception is that only dry-type electrical equipment is used. Are valve regulated lead acid batteries considered dry-type by NFPA's definition? I'm used to dry-type referring to the difference between oil and dry transformers, but wanted to be sure the VRLA batteries meet the intent since they aren't technically 100% dry with the lead acid.

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