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#1
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How to ground generator
Here is a question for someone who knows the code.
I will be installing a generator aboout 60 feet from my home. Could someone tell me what code requires for grounding it? Do I put in a grounding rod/rods at the generator site or run its ground wire to the panel in the house? (It seems that the former could cause a ground loop and the latter would allow for some potential (voltage) between the generator and the adjacent earth.) Thanks. |
#2
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How to ground generator
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#3
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How to ground generator
The generator should have a grounding point specified. This should be
attached to an 8 foot grounding rod. The ground connection on the output plug should be connected to the ground at the electrical panel in the house. ---MIKE--- In the White Mountains of New Hampshire (44° 15' N - Elevation 1580') |
#4
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How to ground generator
wrote in message ... Here is a question for someone who knows the code. I will be installing a generator aboout 60 feet from my home. Could someone tell me what code requires for grounding it? Do I put in a grounding rod/rods at the generator site or run its ground wire to the panel in the house? (It seems that the former could cause a ground loop and the latter would allow for some potential (voltage) between the generator and the adjacent earth.) What are you using it for, to power your house (through a transfer switch of course) or independent devices? Is it bonded or not? Can't really give an answer without knowing that. |
#5
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How to ground generator
Thanks for the reply.
The generator will be for powering the house. The house panel will be back-fed through a 240V breaker with a mechanical interlock preventing the backfeed breaker and the main breaker from being turned on at the same time. I am not sure what you mean by "bonded". On Thu, 07 Dec 2006 14:46:27 GMT, "Toller" wrote: wrote in message .. . Here is a question for someone who knows the code. I will be installing a generator aboout 60 feet from my home. Could someone tell me what code requires for grounding it? Do I put in a grounding rod/rods at the generator site or run its ground wire to the panel in the house? (It seems that the former could cause a ground loop and the latter would allow for some potential (voltage) between the generator and the adjacent earth.) What are you using it for, to power your house (through a transfer switch of course) or independent devices? Is it bonded or not? Can't really give an answer without knowing that. |
#6
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How to ground generator
wrote in message ... Thanks for the reply. The generator will be for powering the house. The house panel will be back-fed through a 240V breaker with a mechanical interlock preventing the backfeed breaker and the main breaker from being turned on at the same time. I am not sure what you mean by "bonded". On some generators the neutral is connected to the ground (bonded). On most it is not. (non-bonded). It should say on both the generator and manual. If you have a unbonded generator you are all set. Your generator is grounded through the breaker box, and must not be grounded independently; the ground loop you referred to. If you have a bonded generator you have a problem. The generator must be grounded, and the neutral connection on your main feed must be switched along with the hots; again to prevent loops. I don't have it saved any more, but there is a wonderful website from a Canadian distributor that explains all of this in extreme detail with diagrams; but I gave you the heart of it. |
#7
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How to ground generator
If your interlock switch disconnects the neutral from the mains input, you
will need to have or make your generator ground bonded to the neutral line. If your interlock only switches the two hot lines and keeps the neutral connection intact you want your generator without the ground bonded to the neutral line. Remember the house neutral should be bonded to the ground once in your service entrance switchbox. "Toller" wrote in message ... wrote in message ... Thanks for the reply. The generator will be for powering the house. The house panel will be back-fed through a 240V breaker with a mechanical interlock preventing the backfeed breaker and the main breaker from being turned on at the same time. I am not sure what you mean by "bonded". On some generators the neutral is connected to the ground (bonded). On most it is not. (non-bonded). It should say on both the generator and manual. If you have a unbonded generator you are all set. Your generator is grounded through the breaker box, and must not be grounded independently; the ground loop you referred to. If you have a bonded generator you have a problem. The generator must be grounded, and the neutral connection on your main feed must be switched along with the hots; again to prevent loops. I don't have it saved any more, but there is a wonderful website from a Canadian distributor that explains all of this in extreme detail with diagrams; but I gave you the heart of it. |
#8
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How to ground generator
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#9
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How to ground generator
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#10
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How to ground generator
Hi,
There is often alot of confusion over this. This is because there are a few variables to the equation: 1) Do you have a switch neutral in your transfer switch? 2) Is the neutral in your generator bonded to ground? 3) Are the house and generator grounds connected? Or should they be connected? Depending on the circumstances there are various "Sets" or possible soultions. Rather than me explain it, the best web sites I found was this: http://www.imsasafety.org/journal/marapr/ma5.htm http://www.osha.gov/OshDoc/data_Hurr..._generator.pdf Warmest regards, Mike. wrote: Here is a question for someone who knows the code. I will be installing a generator aboout 60 feet from my home. Could someone tell me what code requires for grounding it? Do I put in a grounding rod/rods at the generator site or run its ground wire to the panel in the house? (It seems that the former could cause a ground loop and the latter would allow for some potential (voltage) between the generator and the adjacent earth.) Thanks. |
#11
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How to ground generator
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#12
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