Ralph –
I’m less familiar with the CEC, but the NEC does not preclude 208/120 V WYE to a single-family home (residence). It all depends on how much one is willing to pay the utility for the service and proper provisioning and system design at the use location. Peter Tarver *From:* McDiarmid, Ralph [mailto:ralph.mcdiar...@schneider-electric.com] *Sent:* Thursday, October 22, 2015 15:00 *To:* EMC-PSTC@LISTSERV.IEEE.ORG *Subject:* Re: [PSES] 208 split-phase? NEC art 210.4 and 210.5 seem to allow it and the CEC here in Canada certainly allows it. For large residential highrises, it's probably simpler and cost effective to distribute 120/208 throughout the building (1/3 of the suites on one 208 leg, and so on) Phase balancing would be part of the building electrical plan. Sending a single-phase MV feeder to 1MVA, 120/240V transformer is likely a comprehmise It's different for low density residential where stringing a mile or two of single-phase MV to feed 120/240 pole transformers throughout the neighborhood makes more sense. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
