Everything You Should Know About Ground Wires | Better However, grounding considerably improves a home's safety and is worth adding. If you want to ground an entire system, you have to call in a pro to rewire the entire home—an expensive job. If you want to ground only one receptacle, you can ask an electrician to run an individual ground wire from the receptacle to a cold-water pipe. Home Wiring Basics That You Should Know Dec 24, 2018An electrical ground is a safety system that provides a safe path for electricity to follow in the event of a short circuit, electrical surge, or other safety or fire hazard. In modern home wiring systems, each circuit has its own ground wire that leads back to the service panel.