Re: service
Originally posted by jimwalker: Charlie ,now you have me confused. . . . Why is it wrong to look at this as 400 amps at 120 volts ?
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- <font size="2" face="Verdana, Helvetica, sans-serif">(1) Because it is imprecise.</font>
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- <font size="2" face="Verdana, Helvetica, sans-serif">(2) Because it can mislead those who are trying to learn the trade.</font>
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- <font size="2" face="Verdana, Helvetica, sans-serif">(3) Because if two professionals, each of whom fully understands the ?technical truth,? speak to one another using sloppy, conversational, slang language, the two will not confuse each other. We do it all the time. But if one such person uses the same language with a trainee, that trainee might not learn the ?technical truth.?</font>
<font size="2" face="Verdana, Helvetica, sans-serif">So I strongly recommend that everyone be clear in our instructions and our conversations with trainees and with our paying customers.
Here is the ?technical truth? on this issue:
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- <font size="2" face="Verdana, Helvetica, sans-serif">You CAN supply 400 amps worth of 120 volt loads by placing 200 amps on each side of the panel.</font>
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- <font size="2" face="Verdana, Helvetica, sans-serif">If you measure the current on that panel, you will get a reading of 200 amps.</font>
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- <font size="2" face="Verdana, Helvetica, sans-serif">The correct (i.e., precise) way to describe that load is that the panel has 200 amps worth of 120/240 volt loads, for a total of 48,000 watts, with each individual load being served at 120 volts.</font>
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by the way the breakers on left are odd
That?s what I get for reverting to my Navy training (?Odd to starboard, even to port?).