Motor Driven Appliance

[augie47]

In regard to 422.31 & 422.32, what determines a "motor driven appliance ?".
422.31(B) allows us to use a breaker lockout as a disconnecting means for an appliance with a motor greater than 1/8 HP, but 422.32 does not.
I can see such a creature as a commercial mixer which is primarily a motor and a container being a "motor operated appliance", but what about an appliance with say a 15 kw heating coil and a 1/4 HP fan motor ? 422.3 tells us 430 applies, again to motor operated appliances", but I find no Code definition of such.

 

[kwired]

In regard to 422.31 & 422.32, what determines a "motor driven appliance ?".
422.31(B) allows us to use a breaker lockout as a disconnecting means for an appliance with a motor greater than 1/8 HP, but 422.32 does not.
I can see such a creature as a commercial mixer which is primarily a motor and a container being a "motor operated appliance", but what about an appliance with say a 15 kw heating coil and a 1/4 HP fan motor ? 422.3 tells us 430 applies, again to motor operated appliances", but I find no Code definition of such.

I have asked a similar question in another thread somewhat recently, but had no real consensus of just what a "motor driven appliance" really is. Even asked opinions of appliances like gas water heaters with a draft blower, though those are usually less than 1/8 hp, still got no real clarification if the appliance was considered "motor driven".

 

[petersonra]

In regard to 422.31 & 422.32, what determines a "motor driven appliance ?".
422.31(B) allows us to use a breaker lockout as a disconnecting means for an appliance with a motor greater than 1/8 HP, but 422.32 does not.
I can see such a creature as a commercial mixer which is primarily a motor and a container being a "motor operated appliance", but what about an appliance with say a 15 kw heating coil and a 1/4 HP fan motor ? 422.3 tells us 430 applies, again to motor operated appliances", but I find no Code definition of such.

space heaters are covered in 424.19, with or without motors.

that would seem to make something that is not a space heater a motor driven appliance.

 

[Gregg Harris]

In regard to 422.31 & 422.32, what determines a "motor driven appliance ?".
422.31(B) allows us to use a breaker lockout as a disconnecting means for an appliance with a motor greater than 1/8 HP, but 422.32 does not.
I can see such a creature as a commercial mixer which is primarily a motor and a container being a "motor operated appliance", but what about an appliance with say a 15 kw heating coil and a 1/4 HP fan motor ? 422.3 tells us 430 applies, again to motor operated appliances", but I find no Code definition of such.

2011 ads clarity over 2008 for these articles. and your heater example is covered in 424.19

 

[augie47]

After I posted, I checked the '11 and it does indeed clarify the situation.