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#58294 11/05/05 02:03 AM
Joined: Jul 2005
Posts: 33
N
NJI Offline OP
Member
can anyone explain the hazards of running a 4wire subfeed 120/240 AND puting in ground rods. Other than the fact that you shouldn't i'd like to brush up on the theory behind it.


I have worked as an apprentice and on to a journeyman in a general construction company. 90% of what I do is residential. I have an associats degree in electrical technology. I have started my own buisness this year and am with out the help of other electricians. this is why i find this site so helpful.
#58295 11/05/05 09:09 AM
Joined: Nov 2000
Posts: 2,148
R
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NJI,
Quote
can anyone explain the hazards of running a 4wire subfeed 120/240 AND puting in ground rods. Other than the fact that you shouldn't i'd like to brush up on the theory behind it.
Who told you that you shouldn't do both? If the sub panel is at a second building and you pull an EGC, the code requires a grounding electrode system at the second building.
Don


Don(resqcapt19)
#58296 11/05/05 11:45 PM
Joined: Jul 2005
Posts: 33
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NJI Offline OP
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As I have understude my AHJ one or the other. Can you give me my code references? I thought one or the other. four wire or three and a rod.


I have worked as an apprentice and on to a journeyman in a general construction company. 90% of what I do is residential. I have an associats degree in electrical technology. I have started my own buisness this year and am with out the help of other electricians. this is why i find this site so helpful.
#58297 11/05/05 11:47 PM
Joined: Feb 2005
Posts: 693
L
Member
No, it's bond neutral to ground, or 4-wire.


Larry Fine
Fine Electric Co.
fineelectricco.com
#58298 11/05/05 11:53 PM
Joined: May 2002
Posts: 1,716
R
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NJI, read 250.32

Roger

#58299 11/06/05 12:14 AM
Joined: Jul 2005
Posts: 33
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thanks, i'v been searchhing past posts and am reading as we speak..workin on it


I have worked as an apprentice and on to a journeyman in a general construction company. 90% of what I do is residential. I have an associats degree in electrical technology. I have started my own buisness this year and am with out the help of other electricians. this is why i find this site so helpful.

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