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cool cat
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Discussion Starter · #1 ·
7 cabins 800 sq feet approx each with a 4500 watt H20 heater, each with 3600 watt ac unit , each has a kitchen ,no other fastened in place appliances gas stove and gas heat..
800 x3 watt 2400
4500 h20 heat
3600 ac unit
3000 SA
TOTAL 13500
10,000 @ 100 % = 10000
3500 @ 35 % + 1225
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11,225 / 240 = 47 AMPS

47 amps X 7 CABINS = 329 amps That seems ridiculously high as they have been running off of a 100 amp meter base for years No disconnect). Can I derate these like multifamily? 220.84.

44% x 329= 145 amps ???

Does this seem right?
 

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I would say resort cabins would be closer to hotel unit demand. You may want to run it by your AHJ.

Seems odd to have gas and then run a high-power electric water heater.
 

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Is it a smart meter?

If it is, have the power co. pull the peak demand info for the last 12 months. I don't waste time doing calcs usually when I can get the real world data from the power co.

I've done it enough now, that I have the email address/contact info for the guy in the power co that does this for me. I just email him a meter number and usually within a day he sends me back an excel spreadsheet showing 12 month peak demand data. Then if your inspector needs it or wants to see it, you have it.
 
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