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240v

  1. Commercial Electrical Forum
    I am trying to figure out if powering 240v single phase loads will work with a 240v 3phase corner grounded delta system. The system is a 240v 3phase corner grounded delta system with "B" phase intensionally grounded. I have multiple 240v single phase loads and (1) 240v 3 phase load. I know...
  2. General Electrical Discussion
    Hello all, I am an electronics engineer, and i have been tasked with bringing a mobile lab up to code for use in the US. While i have a decent handle on most things related to 120v wiring, and of course most things dealing with lower voltages used by electronics, but anything above that and i...
  3. Electrician Swap
    Catalog number: CR353EGY4B New and unused, still sealed in General Electric packaging. These items are 208/240 volt, 75 amp, 3 pole contactors. Also called definite purpose contactors or motor starters. Please contact me with any questions. I have a few available - asking $80 each, I can email...
  4. NEC Code Forum
    Is there any reason I can not put a 240V refrigerator in a garage in the US with a dedicated circuit with no GFCI protection? I can't find any reason it is not allowed. But 240V refrigerators are not readily available in the US and I'm not sure why.
  5. Commercial Electrical Forum
    I have been asked to quote a job that the owner of building says switchgear is still good. It is a 3000amp 240v 3 ph delta/ no neutral and from the 60's I'm guessing. It has not been used in years and been sitting in a un leased building with some heat for the winter. Showing signs of water...
  6. Commercial Electrical Forum
    I have read so many mixed reviews on this subject. I wanted to run this past all you brilliant electricians out there. Is this going to burn up the POCO transformer? How long will it take? The chicken farm / horse ranch I work on has a 4-wire three phase 240v delta system with a high B leg of...
  7. Residential Electrical Forum
    I'm not necessarily an electrician, but I work with installing network equipment on a large scale. Normally I install devices in "telephone" company Central office facilities (the quotes are because the phone companies barely do phones anymore; most of the stuff is data equipment for...
  8. General Electrical Discussion
    I have worked on machinery from Europe that has 2-wire grounded 240V in the panel. This is just like the 2-wire grounded 120V we use in the U.S. In other words, you have 2 wires coming off the secondary side of a single phase transformer at a potential of 240 V. One leg is grounded, giving you a...
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