A 200 amp service panel will require a # 4 bare copper ground wire.
On a 200 amp or any size service the ground wire is easily identified. Look in the distribution panel for the neutral bus bar. This is where the service neutral (white wire) is connected to the distribution panel. There you will see a bare copper wire connected to the same neutral bar. This is the ground wire that is connected to the ground rods out side of the house.
You do not use a ground wire in the connection from the meter base to the distribution panel. A bonding wire may be required if the service is using PVC conduit.
A #14 wire will do fine for grounding a 20 amp device. That is the size of the ground wire in a 2 conductor # 12 wire building cable.
Yes, they are the same size wire.
The ground wire in a two or three conductor #12 cable is a #14 bare ground wire.
Yes, there are ground wire gauges. The approiate size ground wire must be matched to the size service you are installing. For instance a 200 amp serivce must be grounded with a # 4 bare copper ground wire.
No. Usually when you get to that size panels the grounds are stranded.
On a 200 amp or any size service the ground wire is easily identified. Look in the distribution panel for the neutral bus bar. This is where the service neutral (white wire) is connected to the distribution panel. There you will see a bare copper wire connected to the same neutral bar. This is the ground wire that is connected to the ground rods out side of the house.
NEC code requires #6 bare copper.
200 amp service in chicago uses 3 aught.
6
You do not use a ground wire in the connection from the meter base to the distribution panel. A bonding wire may be required if the service is using PVC conduit.
Yes, they are the same size wire.
A #14 wire will do fine for grounding a 20 amp device. That is the size of the ground wire in a 2 conductor # 12 wire building cable.
No, you can use #4 bare copper ground wire.
The ground wire in a two or three conductor #12 cable is a #14 bare ground wire.
A 3/0 copper wire with an insulation rating of 90 degrees C is rated at 210 amps.