ECN Forum Forums Code Related Discussion NEC & other Code issues Actuators for dampers

Are HVAC actuators for commerecial dampers considered motors? Do they have to meet the disconnect requirement in NEC 430.101? Any opinions would be appreciated.

I would tend to classify a damper actuator as an appliance.

422.31 (A): For permanently connected appliances rated at not over 300 VA or 1/8 HP, the branch-circuit overcurrent device shall be permitted to serve as the disconnecting means.

Most of the damper actuators that I have seen are pretty small.

Just MHO.

Chris

Most of the actuators I work on are 24v class 2. No need for disco.

I do not see the fact that it is class 2 as the determining factor.

Disconnect switches are not only to keep us from getting shocks but also to keep us from getting caught in moving parts.

Many 24 volt damper motors can provide enough torque to amputate a finger.

I would like to believe that raider1 has the answer with 422.31 (A) but I am really not sure.