Air transfer through conduit

1 reply [Last post]
cmdi017's picture
Joined: 2014-11-15

Is there any NEC approved solution to stop the transfer of air (cold or hot) through conduit where one device is in an unconditioned space while the other device is in a temperature-controlled space?

dkidd's picture
Joined: 2013-11-13

Yes, see Sec. 300.7(A).

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