National Electrical Installation Standards

Standards as High as Your Own

Friday, July 6, 2018


Hello, with regard to 110.26(E)(1)(a) Dedicated Equipment Space, does the "electrical installation" limit conduit, busway, supports, etc to the electrical installation serving only that particular piece of equipment, or can any portion of the building's electrical installation pass through any electrical equipment dedicated space? For example, can a conduit pass over a panel that is not associated directly with that conduit while entering/exiting an electrical room? If the conduit is within the dedicated space of another panel but is installed as high as possible, allowing future conduit access to the panel, would that be acceptable? Sounds like we're headed to an AHJ decision? Thanks, Brett



Hey Brett thanks for your question. The wording in the last sentence of 110.26(E)(1)(a) is "other equipment foreign to the electrical installation". It does not state "foreign to that equipment" so if it is electrical equipment it is generally acceptable even though it is not associated with that specific piece of equipment.

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