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Well the first grounding rod would be for the meter located outside the home and the second grounding rod would be for cox cable line.but but if you have dishnet work you will not need too.
The NEC does not specify how many ground rods should be installed. I can only guess why but it is important to note that ground rods are SUPPLEMENTAL to a water pipe grounding electrode when a water pipe is your primary electrode. It is easy to think of the rod or rods as primary and the water line as secondary but this is not the case.
Where I live the local jurisdiction requires 2, and the NEC does specify that when more than one is used they must be a minimum of 6 feet apart.
Many times utility companies other than your electric company will install ground rods for their own systems. Many times these are not full 8 foot rods as is required for your electric service. But technically these are not installed properly as the NEC requires that various grounding electrodes (rods) used for the same building but for different purposes must be bonded together and very often they are not. Electrically it probably doesn't matter at the voltages in use but I'm just sharing information.
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoThe ground rod has to be driven to within two inches from the end. This will give just enough room to apply the ground rod clamp. The new rods are stamped with the length on them so you can not cut off the rod that will not go into the ground. Electrical inspectors look for the length identification marks to make sure the full length of the rod is in the ground.
Wiki User
∙ 15y agoIt depends how wet the ground is the wetter it is the less penetration required. If the soil is really dry you need to drive down a much longer stake.
Wiki User
∙ 13y agoTwo ten foot ground rods located ten feet apart.
around here the inspectors want them a minimum of six feet apart.
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