Where or, does it, state that the wire size is included in the Demand Rating of column C in table 220.19? For example; in a dwelling there is a 9kw 120/240v household range and this results in a 33amp load. Should I multiply this by 1.25? If not, why doesn't it say that it's built into this table? Shouldn't it simply say "all of the continuous load mathmatics are built into this table?" I've read this until I've confused myself. Help!!
table 220.19
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Re: table 220.19
Electric ranges are not considered continuous since they have a thermostat that cycles the power on and off, even when you cook that turkey for 5 hours.
Therefore, I wouldn't consider the demand load to be continuous. I don't think you need to multiply the result by 1.25.
Steve
Electric ranges are not considered continuous since they have a thermostat that cycles the power on and off, even when you cook that turkey for 5 hours.
Therefore, I wouldn't consider the demand load to be continuous. I don't think you need to multiply the result by 1.25.
Steve
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Re: table 220.19
The key words that I see in the text of 220.19 (this is the 2002 version, by the way, as it was moved in 2005) are these: ". . . demand load . . . shall be permitted to be computed in accordance with Table 220.19." That tells me that I don't have to compute it any other way, such as by multiplying it by a 1.25 factor for continuous loading. I agree with Steve's reasoning as to why the 1.25 does not apply. But as I read that sentence, I don't even have to think about the 1.25.
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The key words that I see in the text of 220.19 (this is the 2002 version, by the way, as it was moved in 2005) are these: ". . . demand load . . . shall be permitted to be computed in accordance with Table 220.19." That tells me that I don't have to compute it any other way, such as by multiplying it by a 1.25 factor for continuous loading. I agree with Steve's reasoning as to why the 1.25 does not apply. But as I read that sentence, I don't even have to think about the 1.25.
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