National Electrical Installation Standards

Standards as High as Your Own

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Tuesday, December 26, 2017

Question:

I have exterior 250 amp HVAC unit with a factory Breaker installed in the unit. My prints don't show a service disconnect. My question should there be a service disconnect with in sight?

Troy Guy

A

Answer:

Hey Troy thanks for your question. Yes, a disconnecting means must be located within sight from and readily accessible from air conditioning equipment. That disconnecting means can be installed on or within the equipment as stated in the second sentence of 440.14. A disconnecting means provided by the manufacturer is acceptable if it meets the stated conditions and is properly rated.

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NECA STANDARDS: NECA publishes the National Electrical Installation Standards™ (NEIS™), a series of ANSI-approved performance and quality standards for electrical construction. Visit NECA-NEIS.org for more information. NEISÔ can be purchased in three formats: as paper books, on CD, or as electronic downloads.

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