Main Page | See live article | Alphabetical index Single wire earth return (SWER) is a method of supplying single phase power to remote areas with low installation costs. The system uses a single conductor which, at each termination point, is passed through an isolation transformer with the other side of the primary winding connected to an earth pin, where the circuit is completed through the ground. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.