Raceways Exposed to Different Temperatures.

NH 2022-2023 Licensing Concerns and Deficiencies. These raceways penetrate the walk-in freezer below. using a seal-off fitting is an expensive way to seal the raceways.
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NH 2022-2023 Licensing Concerns and Deficiencies. These raceways penetrate the walk-in freezer below. using a seal-off fitting is an expensive way to seal the raceways.

2022-2023 License and Installation Concerns Bulletin.

The Electricians' Licensing Board in conjunction with the State Electrical Inspectors, municipal electrical & building inspectors & other representatives of the electrical industry in the State of New Hampshire have put together this list of common licensing and installation concerns and problems encountered by the Board's office staff relative to the State's licensing law RSA 319-C and the administrative rules.

Section 300.7 Raceways Exposed to Different Temperatures.

Section 300.7(A) Sealing. Where portions of a raceway or sleeve are known to be subjected to different temperatures, and where condensation is known to be a problem, as in cold storage areas of buildings or where passing from the interior to the exterior of a building. A raceway or sleeve shall be filled with an approved material to prevent the circulation of warm air to a colder section of the raceway or sleeve. An explosionproof seal shall not be required for this purpose.

  Click here to view the NH amendments to the NEC  

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Raceways Exposed to Different Temperatures.

Below is a Real Question from our Electrical Continuing Education Courses for Electrical License Renewal:

Which of the following is true regarding sealing of raceways?

A: It is required where a raceway enters a conduit body.
B: It is required where a raceway enters a box.
C: It is required where portions of a raceway are joined to other raceways.
D: It is required where portions of a raceway or sleeve are known to be subjected to different temperatures, and where condensation is known to be a problem.
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