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You can convert BTU's to amps if you want to. 12,000 BTU's per ton of refrigeration. 1 horsepower per ton. 746 watts per horsepower, etc. etc.

Lacking that, yea, sure... go ahead and just extrapoloate the breaker values they gave you into your calc. What little that it's off, (a tad high), won't really effect your service calc much at all.
 

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I have always thought the residential calculations for a single resident were a joke. Because no matter what you calculate 99% of new homes get a 200 amp service or 400 amp.
Yeah, I agree, but it forms the foundational skill for unusual homes and light commercial work. Small home with gas appliances = 100 amp. Regular home without electric heat, or small home with electric heat = 200 amp. Large home = 320. Apartment buildings are about the only time I do a service calc anymore, unless there's something unusual about a certain home that causes me to 'double check' my gut with a service calc.
 
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