I am designing my first bipolar PV system, and would like some clarification on trenching requirements. I understand that the monopole circuits should be kept separate in order to prevent jumping to 1200V in failures.
Article 690.4(G) states that "the electrical outputs from each monopole subarray shall be installed in separate raceways" This is all fine and good. I look to the Article 100 definition of a raceway and see that a raceway is "An enclosed channel of metal of nonmetallic materials designed expressly for holding wires, cables, or busbars" Okay, so this leads me to think the monopoles can be run in the same trench, as long as they are in separate conduits.
Then I continue reading 690.4(G), "All conductors from each separate monopole subarray shall be routed in the same raceway." Now I am confused. They are obviously not going to all be in the same conduit. Is a "raceway" in this section a "trench"? If so, do I need separate trenches?
A continuation of this question would be in the case of direct-buried cables. Now there aren't any raceways by the definition of Article 100.
I think I might be thinking too hard about this. Some clarification would be appreciated. Thanks.
Article 690.4(G) states that "the electrical outputs from each monopole subarray shall be installed in separate raceways" This is all fine and good. I look to the Article 100 definition of a raceway and see that a raceway is "An enclosed channel of metal of nonmetallic materials designed expressly for holding wires, cables, or busbars" Okay, so this leads me to think the monopoles can be run in the same trench, as long as they are in separate conduits.
Then I continue reading 690.4(G), "All conductors from each separate monopole subarray shall be routed in the same raceway." Now I am confused. They are obviously not going to all be in the same conduit. Is a "raceway" in this section a "trench"? If so, do I need separate trenches?
A continuation of this question would be in the case of direct-buried cables. Now there aren't any raceways by the definition of Article 100.
I think I might be thinking too hard about this. Some clarification would be appreciated. Thanks.