integlikewhoa
Member
Hello all. I have read threw the detached garages section about grounding ( http://forums.mikeholt.com/showpost.php?p=649524&postcount=13 )
and had a few questions about it. Im working with the same sistuation as example #3. I have a 200 amp main and I am running a 100 amp sub in a detached garage useing PVC and have no water, gas or other metal lines running to it. The garage is 40ft one way from the main panel. I see I should run only 3 wire out to the garage add a ground rod and connect the netural and the grounding rod together in the panel, same way as in the main.
My question is what problems will arise if and when a gas line or water line is ran out the garage? A gas line my be added for a heater in the future. Will the electrical system have to be changed or re done? Also for the record the money of adding an extra wire for 40 foot is not a big deal and 1 1/2 conduit was run so there is plenty of room. Im just trying to the find the safest and best all around way of doing it for now and for the future if gas and water is run out there. I dont want to run into any issues of metal boxes carring current.
Can someone help anwser the question and also explain or direct me to a diagram that helps better understand the 2 different ways of doing it the cause and affects of each.
The other way would be to run 4 wires out to the garage and keep the ground and netural seprate unlike the main. Would a grounding rod also be used in this case?
Thanks for you help, JIM
and had a few questions about it. Im working with the same sistuation as example #3. I have a 200 amp main and I am running a 100 amp sub in a detached garage useing PVC and have no water, gas or other metal lines running to it. The garage is 40ft one way from the main panel. I see I should run only 3 wire out to the garage add a ground rod and connect the netural and the grounding rod together in the panel, same way as in the main.
My question is what problems will arise if and when a gas line or water line is ran out the garage? A gas line my be added for a heater in the future. Will the electrical system have to be changed or re done? Also for the record the money of adding an extra wire for 40 foot is not a big deal and 1 1/2 conduit was run so there is plenty of room. Im just trying to the find the safest and best all around way of doing it for now and for the future if gas and water is run out there. I dont want to run into any issues of metal boxes carring current.
Can someone help anwser the question and also explain or direct me to a diagram that helps better understand the 2 different ways of doing it the cause and affects of each.
The other way would be to run 4 wires out to the garage and keep the ground and netural seprate unlike the main. Would a grounding rod also be used in this case?
Thanks for you help, JIM
