Grounding is a crucial part of a residential electrical system. Simply put, proper grounding provides a path of least resistance to discharge rogue electrical surges that would otherwise pose an electrocution hazard to people coming in contact with electrical appliances, switches, or even water lines in a house. Such surges in a residential electrical system could occur from lighting or short-circuits in electrical appliances or in the household wiring itself.
Proper grounding is, of course, a standard procedure in installing new electrical service when a house is build and not something that the average homeowner has to mess with. But we here at HouseofDIY.com cater to the non-average homeowner that does things like upgrade their electrical distribution panels themselves. In such cases, you'll want to replace your grounding. Ground rods don't last forever and if your panel has been around long enough that the time has come to upgrade it, chances are your ground rods aren't exactly in prime condition anymore, either. Upgrading residential electrical service while using old ground rods makes about as much sense as keeping the tires from your old car to put on your new one. Even if your local electrical inspector doesn't require you to upgrade the grounding, you'd be well served to do it anyway. It may be a little extra work, but the cost is minimal, and the safety of having fresh grounding will give you the peace of mind that the job is done right.
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