I am inquiring as to if anyone has heard if there are any NEC restrictions in place regarding the installation of a 80 amp (40/240 x2) tankless water heater placed within a utility closet that is also going to contain other readily combustible or flammable item such as bedsheets towels jackets, ect. I have found plenty for gas fed heaters but am stumped if this is even allowed although the plumbing contractor states otherwise. Any help would be appreciated.
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