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Electrical Expansion For Factory
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<blockquote data-quote="cullynofc" data-source="post: 392081" data-attributes="member: 26206"><p>Hi,</p><p></p><p>The factory I work in is expanding to include some high usage machines. I was given the following information and I was hoping someone could simplify these notes and perhaps provide a simple diagram to show the flow of electrics.</p><p></p><p>"There are currently 2 x 400A supplies coming into the building from 2 x main switches.</p><p></p><p>Supply A feeds one area and is currently feeding around 200A per phase.</p><p></p><p>Supply B feeds into the switch room and is drawing around 180A per phase.</p><p></p><p>With the expansion program we are looking to more than double capacity which will push the limit of supply to over 400A on supply B.</p><p></p><p>There is enough power on supply A to transfer across to supply B which will require approx. 100A @ 400V taking this to approx. 380A of use.</p><p></p><p>There is no way to transfer energy between the feeds in its current existing form that was inherited.</p><p></p><p>So this requires the 2 x feeds to be brought into one system from the main switch panel into the building separate to the factory panel board, which will be a new panel board.</p><p></p><p>I would suggest based on current and future expansion this new panel board be installed and increased to a 2000A rated capacity.</p><p></p><p>We only have 800A capacity at present, but with expected expansion, then this upgrade will provide the correct panel board."</p><p></p><p>Any help is appreciated.</p><p></p><p>Thanks.</p></blockquote><p></p>
[QUOTE="cullynofc, post: 392081, member: 26206"] Hi, The factory I work in is expanding to include some high usage machines. I was given the following information and I was hoping someone could simplify these notes and perhaps provide a simple diagram to show the flow of electrics. "There are currently 2 x 400A supplies coming into the building from 2 x main switches. Supply A feeds one area and is currently feeding around 200A per phase. Supply B feeds into the switch room and is drawing around 180A per phase. With the expansion program we are looking to more than double capacity which will push the limit of supply to over 400A on supply B. There is enough power on supply A to transfer across to supply B which will require approx. 100A @ 400V taking this to approx. 380A of use. There is no way to transfer energy between the feeds in its current existing form that was inherited. So this requires the 2 x feeds to be brought into one system from the main switch panel into the building separate to the factory panel board, which will be a new panel board. I would suggest based on current and future expansion this new panel board be installed and increased to a 2000A rated capacity. We only have 800A capacity at present, but with expected expansion, then this upgrade will provide the correct panel board." Any help is appreciated. Thanks. [/QUOTE]
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