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Inactive, Master Electrician
Category: Electrical
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Experience:  Electrical Contractor
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Adding a 20amp circuit in garage with 12 ga stranded wire.

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Adding a 20amp circuit in garage with 12 ga stranded wire. My main panel does not have a ground bar. house build 1986. Where should the ground wire (green in this case) be attached.
You are corresponding with JOSEPH - Your "Personal On-Line Electrical Consultant".

Is the panel your wiring into a main panel? How many wires are you running and exactly what colors are they?

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Sunday, September 25, 2011 4:52:17 PM
Customer: replied 5 years ago.
It IS the main panel (NOT a subpanel), running 3 wires, black for hot, white for neutral, green for ground.
Ok in that case you will need to connect both the white and green wires to the same neutral bus in the panel. The main panel does not separate them. They are only separate in subpanels.

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Sunday, September 25, 2011 4:57:46 PM
Customer: replied 5 years ago.
Thank you. One last question. In the man panel there are only white ground wires on the neutral bar for all of the other installed circuits. Don't see any 3rd (green) wires in the main panel. Is this because in the original wiring the electrician must have connected the green ground and white neutral somewhere before getting to the main panel? What was done is not so important, just curious as to why there are no other ground wires connected to the neutral bar.
In the main panel the bare aluminum wire coming in with the main service wires is the neutral/ground. They are one in the same. That is why you will see both bare copper grounds and whites in the same bus.
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Sunday, September 25, 2011 5:06:21 PM

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