I have been reading about SWER and how is used developing countries and Australia outback and is a poor system. Well I was checking out the transformer on the pole in my back yard and it sure looks like it is hooked up SWER. The poles have 4 wires. 3 off them are the lines to the houses and the 4th is the high voltage. The transformer has 5 wires. The 2 that look like the primary have the high volt on one terminal and a wire coming down the pole to a ground rod the other. The other 3 go to the homes with the center one also connected to the ground. I live in the middle of a city in Ontario. This sure sounds like SWER. Is it?
I read that thread. That is what got me thinking about this. The primary has only one wire referenced to the ground rod. How is that different SWER just because the secondary is tied to the ground rod also.
Re: Single Wire Earth Return#26119 06/01/0310:50 AM06/01/0310:50 AM
Take a close look at the neutral conductor in the seperate secondary wires that run from pole to pole. When the hot secondary conductors are broken so as not to connect two transformers together, the neutral will be kept continuous.
At each transformer, the secondary neutral will be bonded to the ground wire running down the pole to the butt plate (or ground ball or ground rod) as well as to the transformer can itself. The low side of the primary will be bonded to the inside of the can.
If there's cable TV and/or telephone on these poles, the support messengers for them will also be bonded to the same ground wire.
In my mind, I see the PoCo primary neutral interconnections as being similar to the way the NEC has us hook equipment grounds together out on branch circuits. . .if they are present at a location, they are all connected together. Kinda forms a web.
Re: Single Wire Earth Return#26123 06/03/0305:52 AM06/03/0305:52 AM