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Are the dry type non-ventilated transformers shown on page 12-8 of the Digest 173 resin encapsulated?

The transformers with an ``A``, ``B``, or ``C`` in the enclosure number are encapsulated. The rest of the transformers with a ``D``, ``E``, or ``F`` in the enclosure number are not. Any of Square D`s encapsulated transformers, those with enclosure numbers containing A, B, or C, are non-ventilated. Those with an ``E`` are also non-ventilated, NEMA 3R. Those with a ``D`` are ventilated, NEMA 2 (NEMA 3R with the addition of the optional weathershield kit). Those with a ``F`` are NEMA 1 only and must be quoted by TAG as a special should a NEMA 3R rating be required.


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