brother
Senior Member
Had a situation where I found a microwave, coffee pot, and toaster on the same circuit. I let the people know that the microwave itself needs to have its own circuit, since its almost 14 amps. Toaster at 13.75 amps coffee pot at 7.8 amps.
I suggested they go ahead add another circuit since the toaster and coffee pot would be on the same one even after the microwave is dedicated, and its no doubt someone will plug more things in on the counter top like they have in the past, this in a break room.
Someone asked me about demand factor for these 2 cooking units. Unless I'm missing something, I told them they have to use the actual nameplate kw, you cannot use the demand factors in table 220.55 because these 2 are below 1 3/4 kw (1.75 X 1000=1750) per note 3. Toaster 13.75 x 120=1650 kw , coffee pot 7.8 x 120=936 kw.
But , It's been awhile since I did these kitchen equipment calcs for branch circuits since I always added another circuit for these type of situations anyways because its no real cost. Did I tell them correctly?
Does note 4 come into play here? I do not consider these to be counter-mounted cooking units, they sit on the counter, they are not mounted as another person tried to imply. This is commercial break room, not a dwelling unit.
I suggested they go ahead add another circuit since the toaster and coffee pot would be on the same one even after the microwave is dedicated, and its no doubt someone will plug more things in on the counter top like they have in the past, this in a break room.
Someone asked me about demand factor for these 2 cooking units. Unless I'm missing something, I told them they have to use the actual nameplate kw, you cannot use the demand factors in table 220.55 because these 2 are below 1 3/4 kw (1.75 X 1000=1750) per note 3. Toaster 13.75 x 120=1650 kw , coffee pot 7.8 x 120=936 kw.
But , It's been awhile since I did these kitchen equipment calcs for branch circuits since I always added another circuit for these type of situations anyways because its no real cost. Did I tell them correctly?
Does note 4 come into play here? I do not consider these to be counter-mounted cooking units, they sit on the counter, they are not mounted as another person tried to imply. This is commercial break room, not a dwelling unit.
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