220.53 Fixed Appliance Loads Demand Factors

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cdcengineer

cdcengineer

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Opinions....

Would the group consider a hot tub, jacuzzi tub and steam shower to be appliance loads subject to the 75% Demand Factors of NEC 220.53?

I have read quite a few differing opinions on this and curious what the current forums thinks.

Thanks
 
I would not consider any of these things to be an appliance by the definition. I am sure others would argue it.
 
I agree with you both (although a steam shower isn't covered by 680), however the handbook example applies the demand factor to a hot water heater, water pump and furnace motor. I wouldn't have necessarily qualified this equipment as appliances..
 
cdcengineer said:
I agree with you both (although a steam shower isn't covered by 680), however the handbook example applies the demand factor to a hot water heater, water pump and furnace motor. I wouldn't have necessarily qualified this equipment as appliances..
Click to expand...

Did not see steam shower. Is that like a sauna? Never worked on one.

As to the other stuff you just mentioned, it seems to qualify:

Appliance. Utilization equipment, generally other than industrial,
that is normally built in standardized sizes or types
and is installed or connected as a unit to perform one or
more functions such as clothes washing, air conditioning,
food mixing, deep frying, and so forth.
 
Yes, a steam shower is a wet sauna which is installed in a large shower.

I've been sizing services w/o 220.53 applied to much beyond kitchen appliances (excl. the range and cooking as required). It looks like the demand factors could go beyond. I would question why the Handbook example allows the furnace motor to be subject to the 75% demand factor? In my eyes, that's part of space heating equipment which is specifically excluded by 220.53.

Thanks to all for the input..
 
cdcengineer said:
Yes, a steam shower is a wet sauna which is installed in a large shower.

I've been sizing services w/o 220.53 applied to much beyond kitchen appliances (excl. the range and cooking as required). It looks like the demand factors could go beyond. I would question why the Handbook example allows the furnace motor to be subject to the 75% demand factor? In my eyes, that's part of space heating equipment which is specifically excluded by 220.53.

Thanks to all for the input..
Click to expand...

I found this, it may help, this stuff is confusing at times, I know!!!:)

http://forums.mikeholt.com/showthread.php?t=105694

http://www.ecmag.com/?fa=article&articleid=7960
 
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