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The wetness of the soil has no bearing on ground rods. Residential wiring requires two 8 foot long ground rods driven flush or just below the surface of the ground. One is mounted under the meter base and the other is mounted 6 feet to either side.
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The CEC (Canadian Electrical Code) requires two ten foot rods placed ten foot apart for the grounding system. The top of the rods are identified by diameter and length stamped into the rods. This is to prevent cutting the rods off if rock obstructions are encountered. If the rod will not pound into the ground any further it is bent 90 degrees and buried horizontally and again bent 90 degrees up to allow the top of the rod to protrude above the ground so as a connection can be made to it. In the new addition of the code it now allows a ground plate to be used as a grounding medium. Only one plate is required as it has more surface area than two ground rods. The plate is buried a one metre deep or a minimum of 600 mm if rock bottom is encountered.
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LaoAnswer for USA, Canada and countries running a 60 Hz supply service.
A ground rod must be at least 8 feet long and is best installed straight down, so 8 feet is your depth. If you hit rock or some other obstruction, you can drive the rod at an angle up to 45 degrees. If this fails, you can bury it in a trench at least 2 feet deep.
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
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Is a 6 foot grounding rod long enough for a new panel?
Code states that a grounding rod needs to be 8 feet long. A 6 foot rod should be okay in theory, but 8' is code.
What are the factors for selecting electrodes?
If you are talking about grounding electrodes , the types are spelled out in the electrical code book. It can be 2 eight foot rods spaced 10 foot apart. One ten foot rod and just newly accepted a grounding plate dug in to a two foot depth.
How do you properly ground an electric fence?
You need to have a grounding rod made of galvanized steel that is driven straight into the ground until only half an inch of bar is remaining above ground. The ground rod should be at least 6 feet in length. Drier land areas normally require a longer grounding rod, or more of them, spaced 10 feet apart. The ground rods themselves should be placed in [an] area[s] that are naturally permanently moist to have any effect. Then you have to run a grounding cable that is attached to the ground rod along the bottom or top of the fence (can be the top wire or bottom wire) all the way to the fence charger. This cable needs to be attached to the ground rod by ground rod clamps That grounding cable should be attached to that fence charger in order for the fence to be properly grounded. Check out the following links on tips and instructions on how to properly ground an electric fence.
How many grounding clamps are permitted on one ground rod?
As long as the clamp is of an approved type only one is needed per ground rod.
Why does your grounding meter read OL from gen to 1st ground rod and from 1st to 2nd ground rod get 28.51 ohms?
Code requires that the resistance between the two grounding electrodes be 25 ohms or less. You don't mention how deep they are or how far apart they are. THat will make a difference. Or it could be the soil they are in.You need to get the resistance down
