Hotel Feeder Calc.

[mike0w]

When sizing a service for a hotel with multiple suites (each with 3-circuts) and a 2p circuit brekaer for room a/c no stove or cooking appliances (maybe a microwave) can you treat each suite as a dwelling and apply demand factors as indicated in table 220.84 (demand factor for three or more multifamily dweling units.) or would you use the tables that indicate loads by occupance 220.12 va/per square foot? I have seen different engineers calculate it in different ways using 220.84 and 220.12 I believe that 220.12 is the correct way? is this correct?

One project constited of suites containing cooking equipment (range, microwave etc.) along with the general circuits, a 1 phase load center located in each suite and the total load computed using the table in 220.84 but this is a hotel and not a dwelling unit so is this correct to calcuate it this way?

What about hotels with no cooking provisions could you use tabel 220.84 or would that be incorect in calcuating the loads and 220.12 apply?

Thanks in advance.

 

[jtester]

You can use 220.84 when the motel room is actually a dwelling unit, see Art. 100 for definition, in particular the cooking requirement. You can't when the room doesn't meet the specific definition.

I've done both kinds.

Jim T

 

[bsh]

If it doesn't have "permanent cooking facilities" (a microwave doesn't count) then it is NOT a dwelling unit. On another note, this lets you off the hook for installing AFCI's in all the bedrooms.