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William Benard, Gemini Electric Inc.
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Recommendation: Structure--That which is built or constructed for other than listed or identified freestanding electrical equipment.
Substantiation: This proposal attempts to address different interpretations of the term structure especially when a disconnecting means is required at a structure in Section 225.32 and in at least one case by clarifying that a disconnecting means is not required at a standalone transfer switch or other approved freestanding transfer equipment where the conductors are already protected by equipment ahead at the source as in the case of a generator with a built in feeder disconnect.
Although not all in the industry would consider standalone transfer equipment as a "structure," it is hard to convince those that do that such equipment does not fit the existing literal wording in the definition of the term in Article 100. The addition of the wording in the new definition would clarify for more consistent interpretation and determination as to the intention of the protection requirements determined for a "structure." If freestanding electrical equipment is intended to qualify as a "structure" then the listing evaluation should consider construction and structural integrity as a component of the package listing mark, and they do not at this time.