conductors of size 1/0 AWG and larger size 1 AWG and smaller, comprising each phase, polarity, neutral, or grounded circuit conductor, shall be permitted to not be connected in parallel (electrically joined at both ends). The grounding electrode conductors should be connected at the point of the first overcurrent protective device or before it. Aluminum, coper-clad aluminum, or copper. You would put the wire coming from the meter into a trough and have 3 - 200 amp panels out of the trough. Where the grounding electrode conductor or bonding jumper connected to a single or multiple concrete-encased electrode(s), as described in Section E3608.1.2, does not extend on to other types of electrodes that require a larger size of conductor, the grounding electrode conductor shall not be required to be larger than 4 AWG copper conductor. You can have a 600 amp service and still have 3- 200 amp disconnects. Where the grounding electrode conductor or bonding jumper connected to a single or multiple rod, pipe, or plate electrode(s) or any combination thereof, as described in Section E3608.3, does not extend on to other types of electrodes that require a larger size of conductor, the grounding electrode conductor shall not be required to be larger than 6 AWG copper or 4 AWG aluminum.The supports shall be spaced not more than 24 inches on center and shall be within 12 inches of any enclosure or termination. Because the equivalent area is above 1,100 kcmil for copper, the grounded conductor(s) shall have an area not less than 12.5. Where not protected, 6 AWG grounding electrode conductor shall closely follow a structural surface for physical protection.
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