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Old 07-20-2010, 11:26 AM   #15
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You don't say how much distance there is from the main breaker panel that is fed from the utility company to the pedestal you installed. If your house is where the utility wire is attached then the distance is from the house to the garage to the pedistal. Using #4 aluminum wire is equivalent to the current carrying capacity of #6 copper. It sounds to me like you have a voltage drop problem.

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Old 07-20-2010, 11:53 AM   #16
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Mr Haler is correct according to the National Electric Code.
Once the neutral and ground leave the main panel, they MAY NEVER meet again.
Aluminum wiring? RJay is on the money.


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Old 07-20-2010, 12:55 PM   #17
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(I chose to not run the 4th wire) I don't get which 4th wire you did not run,all of them need to be connected or you won't get proper voltage,and the distance of your run will make a difference in wire size.
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Old 07-20-2010, 01:45 PM   #18
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Here are some pictures of an install done this year arrows point to connections,red & black to breaker white to common and ground to ground bar.Attached this way you should get it right.
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