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Subject - Circuit protection
jizza1

Hello everyone, I am very new to the site and I have a question. I need find something in writing (some kind of code reference) that states the maximum over current device to be used with an appliance that’s rated at 30 amps. Right now these 30 amp appliances are protected by 60 amp C/B’s and I know that this is not correct! The appliances are 208 single-phase toasters, coffee makers and ice machines. I perform most of my work in remote places and some times I just have to make things work. Having said that, I want to stay as close to code as possible. I need help from some of the brilliant minds in here.

HELP!!!!
iwire First some questions I have is are these hardwired or cord and plug connected and what is the actual nameplate rating as that may change things.

No a 60 amp breaker is most likely a violation.

If the units do not specify what size overcurrent protection is required we must follow 422.11(E)(2) or (3)

quote:
422.11(E) Single Nonmotor-Operated Appliance. If the branch circuit supplies a single non–motor-operated appliance, the rating of overcurrent protection shall

(1)Not exceed that marked on the appliance;

(2)If the overcurrent protection rating is not marked and the appliance is rated 13.3 amperes or less, not exceed 20 amperes; or

(3)If the overcurrent protection rating is not marked and the appliance is rated over 13.3 amperes, not exceed 150 percent of the appliance rated current. Where 150 percent of the appliance rating does not correspond to a standard overcurrent device ampere rating, the next higher standard rating shall be permitted.


As an example if these units say 24 amps at 208 the breaker could be 25 amps (if non continuous) to 40 amps.
jizza1 Thanks for the reply Iwire!!

The appliances are being hardwired. You have given me the ammo I need to convince my boss to buy a sub panel with the proper C/B’s. They don’t want to spend the money to properly protect the equipment.