One of the most important reasons for grounding electrical currents is that it protects your appliances, your home and everyone in it from surges in electricity. If lightning was to strike or the power was to surge at your place for whatever reason, this produces dangerously high voltages of electricity in your system.
Also know, can rebar be used as a ground rod?
Steel posts or rebar are NEVER adequate grounds! Also, don't use anything other than galvanized steel in the ground system. Copper components, for example, can cause electrolysis and eventually corrode the system's connections. Always use a quality galvanized clamp for ground rod AND fence wire connections.
How far does a ground rod need to be in the ground?
NEC Article 250 does not specify a distance from a house to a ground rod. But the 8-foot rod should be driven into the ground far enough from the house that it will not contact the underground concrete footing of the house, which protrudes horizontally about 1 foot from the base of the foundation.
How far apart to ground rods have to be?
The Code requires you to space rods at least 6 feet apart [250.53(B)]. However, this spacing is a minimum — and far from ideal. When using the typical 8-foot or 10-foot ground rod, you get the best results by spacing the rods at least 16 or 20 feet apart, respectively.