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Circuit Breaker for Air Compressor
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<blockquote data-quote="apprentice87" data-source="post: 540838" data-attributes="member: 13534"><p>Ok, so you have 22kw load. Ignoring funny american things, this is what i would do..</p><p></p><p>22kw/400/1.732 comes out at 31.75A Then we have power factor, lets say 0.8 and efficiency, again, say 85%. By the time we account for these, we have just under 47A This is the figure to use..</p><p></p><p>To answer your questions;</p><p></p><p>1, Yes, as this gives the actual current your compressor will pull</p><p>2, forget the american stuff</p><p>3, Yes</p><p></p><p>You now need to decide on the type of breaker, as in "C" curve or even "D" curve, calculate whatever the max EFLI is, and volt drop too, and then decide what cable you are going to use.. You might have a shock here..</p><p></p><p>john..</p></blockquote><p></p>
[QUOTE="apprentice87, post: 540838, member: 13534"] Ok, so you have 22kw load. Ignoring funny american things, this is what i would do.. 22kw/400/1.732 comes out at 31.75A Then we have power factor, lets say 0.8 and efficiency, again, say 85%. By the time we account for these, we have just under 47A This is the figure to use.. To answer your questions; 1, Yes, as this gives the actual current your compressor will pull 2, forget the american stuff 3, Yes You now need to decide on the type of breaker, as in "C" curve or even "D" curve, calculate whatever the max EFLI is, and volt drop too, and then decide what cable you are going to use.. You might have a shock here.. john.. [/QUOTE]
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Circuit Breaker for Air Compressor
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