CSA C22.2 No. 30

Explosion-proof enclosures for use in class I hazardous locations

Published by CSA Group (CSA)

The CFR incorporates CSA C22.2 No. 30 by reference, which makes the edition it names part of the regulation. The CFR requires the edition it names, which may not be the newest. To enforce any other edition, the agency must publish the change in the Federal Register.

The edition the CFR requires

CSA C22.2 No. 30-M1986 (Reaffirmed 2016), Reaffirmed 2016

As the CFR lists it: “CSA C22.2 No. 30-M1986 (Reaffirmed 2016), Explosion-proof enclosures for use in class I hazardous locations, Reaffirmed 2016 (“CSA C22.2 No. 30-M1986”)”

Listed in 46 CFR 110.10-1(f)(1); required by46 CFR 111.105-3 ↗46 CFR 111.106-3 ↗46 CFR 111.108-3 ↗

How to read it

Where to get itCSA website ↗
The web address the CFR prints for this publisher.

A free or purchased copy may not be the edition the CFR names; check it against the edition above. Every incorporated standard can also be inspected at the National Archives (NARA) and at the agency named in the section that lists it.

CSA C22.2 No. 30 is copyrighted by its publisher; RegKnot shows its title and the editions the CFR names, not its text. Read from the eCFR's incorporation-by-reference sections, current as of October 26, 2026. The regulation text governs. All standards the CFR requires.