Having discussed four regions/countries in the eastern hemisphere where 19 of the projects are located, we turn to the opposite side of the world for the remaining project. One World Trade Center Tower (see Figure 13), in New York, is set to become the tallest building in the western hemisphere in 2013.
There is no difference. 'Star' and 'wye' are alternative names for the same connection. Similarly, 'delta' and 'mesh' are alternative names for the same connection.plit and merge into it. Answer by Awaygood. Confidence votes 22.5K. There is no difference. A three-phase ' star ' connection is simply another name for a ' wye ' connection. 'Star' seems to be the preferred name in Britain, whereas, 'wye' seems to be the preferred name in North America-although this is debatable.
There is 120v from any phase to ground (neutral) with each winding at 120v, but 208v (120 x 1.73) between phases. The 480/277v Y system is connected the same way: 480v line-to-line and 277v line-to-ground. Now, back to our as-of-yet ungrounded Delta system for a moment.There are two ways of grounding a Delta system.uestion about difference between wye and delta. I've been doing commercial and industrial work for a couple of years now, mostly piping and small installations for a contractor. I'm new to the trade and still trying to understand everything.