Garbage Disposal trick question?

[pipe_bender]

2023 NEC Quiz question:

A garbage disposal is to be wired with a nameplate that says 9.5 A , 3/4 HP, 120 volts.
What is the calculated load of this disposal on a branch circuit with two or more loads according to article 210?
A) 1656 VA
B) 1140 VA
C) None of the above

What is the calculated load for the disposal on a individual circuit according to 422.10?
A) 1656 VA
B) 1140 VA
C) None of the above

table 430.248 has 3/4HP = 13.8A X 120V = 1656 VA
Is there one answer for individual circuits and another for two or more loads on a circuit?
If its on a individual circuit then B is correct, but if its on a circuit with two or more loads the you use A?
What do you all think?

 

[curt swartz]

The 3/4 HP disposal isn't really a 3/4 HP motor. Its just marketing HP. Like my 5 HP shop vac that has a 15 amp 120 volt plug.

I don't remember the exact article number in 430 but there is one that states you use the nameplate not the table value.

 

[pipe_bender]

The 3/4 HP disposal isn't really a 3/4 HP motor. Its just marketing HP. Like my 5 HP shop vac that has a 15 amp 120 volt plug.

I don't remember the exact article number in 430 but there is one that states you use the nameplate not the table value.

Ok thanks that makes sense thank you. The question sent me to 422.10 and that got me confused.

 

[wwhitney]

See 430.6(A)(1) Exception 3.

But it seems to me the correct answer is 9.5A * 120V * 125%. 220.14(C) sends you to 430.22/430.24, which specifies a 125% factor on the full load current, of the largest motor in the case of multiple loads on the branch circuit. [There is, of course, the possibility on the first question that the other loads include a larger motor, in which case the load from the garbage disposal would only be 9.5A * 120V.]

Cheers, Wayne

 

[pipe_bender]

See 430.6(A)(1) Exception 3.

OK thats what I was missing.

But it seems to me the correct answer is 9.5A * 120V * 125%. 220.14(C) sends you to 430.22/430.24, which specifies a 125% factor on the full load current, of the largest motor in the case of multiple loads on the branch circuit. [There is, of course, the possibility on the first question that the other loads include a larger motor, in which case the load from the garbage disposal would only be 9.5A * 120V.]

Would that apply to a residential garbage disposal? I doubt they are 'continuous duty' motor.