Class 2 transformer disconnecting means

Location
San Francisco
Occupation
Electrician
It’s clearly stated in article 450.14 about disconnecting means for transformers other than class 2 or 3. What is the code on disconnecting means for class 2 transformers?
 

Coppersmith

Senior Member
Location
Tampa, FL, USA
The last time I installed a class 2 transformer it didn't have any disconnecting means on the secondary unless you want to take out the inline glass fuse which probably qualifies. You can turn off the breaker connected to the primary.
 

Jraef

Moderator
Staff member
Location
San Francisco Bay Area, CA, USA
Occupation
Electrical Engineer
Most Class 2 transformers are plug-in (wall warts). For the occasional hard wired one, a toggle switch would suffice. Don’t forget, Class 2 means it is LESS than 100VA output. So at 120V, that’s less than 1A on the primary side.
 
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