> From: Bertho Stultiens [mailto:ber...@vagrearg.org] > A bit longer explanation: > See attached image. Outputs of the step-down transformer A and B are capacitively coupled to L1 and L2 through four parasitic capacitors. > Connecting A to ground when C1A not equal C2A or connecting B to ground when C1B not equal C2B will create a current in the ground connection. <Huge Snip>
Thank you for this image - I think I've finally got my head around the utter basics of the American electricity supply system. Some of that may have been is it single/two phase? Having 3 phases and a neutral coming into your premises (aka UK 3-phase supply) somehow seems less... subject to complexity Going really OT here (and I should probably start a new thread for this) - what beyond a 1:1 ratio makes a transformer an 'isolation' transformer. I have used the below transformer or similar as the primary power transformer for machines (in the case of the 2kva one, a ram edm). And have considered it to provide sufficient isolation http://www.jmsonline.co.uk/product_info.php?cPath=22&products_id=54 If I'm wrong, please let me know (and ideally how to fix it) Thanks Ben ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
