I was looking at the Integra Rack IR30 or IR45 using the ballast method of holding it down. Has anyone used it with compacted road base below and using 3/4 drain rock for the ballast? How many inches of compacted road base did you require? Any opinions
I was looking at bringing 3 strings of 14 panels each ( maybe 15 will be ok) on 3 pairs of #8 Red/Black wire plus a green #10 ground. All the Integra Racks will be tied together along with the 3x14 panels using #6 bare copper wire and tied to the ground wire in the conduit. I'm looking to utilize a box similar to a combiner box at the racks to fuse the 3 strings and interconnect the solar string wires and ground to the underground conduit wiring but do not need combining. I want to bring all 3 strings back without any combining to a EG4 18 inverter's 3 MPPT inputs. Do they make combiner like boxes located at the array with fuses per string that allow the gauge wire and type transitions but do not combine any of the strings? They just pass through fused and transition to underground THWN-2 wire in the conduit. Could anyone suggest a good model capable of this? Or do they make combiner boxes where the combining can be disabled by removing a jumper or something like that?
I have determined that the 3 string wire sets arriving at the home do require a DC disconnect outside the home so a fire fighter could shut down the 500v + DC arriving from the panels. Most of the non inverter DC disconnects that meet outdoor requirements handle to poles or 2 strings. Does anyone know of a good outdoor high quality DC disconnect that can handle 13 AMPs per string pair for 3 pairs ( or 4 with one unused would be fine).
thanks for any ideas in advance,
I was looking at bringing 3 strings of 14 panels each ( maybe 15 will be ok) on 3 pairs of #8 Red/Black wire plus a green #10 ground. All the Integra Racks will be tied together along with the 3x14 panels using #6 bare copper wire and tied to the ground wire in the conduit. I'm looking to utilize a box similar to a combiner box at the racks to fuse the 3 strings and interconnect the solar string wires and ground to the underground conduit wiring but do not need combining. I want to bring all 3 strings back without any combining to a EG4 18 inverter's 3 MPPT inputs. Do they make combiner like boxes located at the array with fuses per string that allow the gauge wire and type transitions but do not combine any of the strings? They just pass through fused and transition to underground THWN-2 wire in the conduit. Could anyone suggest a good model capable of this? Or do they make combiner boxes where the combining can be disabled by removing a jumper or something like that?
I have determined that the 3 string wire sets arriving at the home do require a DC disconnect outside the home so a fire fighter could shut down the 500v + DC arriving from the panels. Most of the non inverter DC disconnects that meet outdoor requirements handle to poles or 2 strings. Does anyone know of a good outdoor high quality DC disconnect that can handle 13 AMPs per string pair for 3 pairs ( or 4 with one unused would be fine).
thanks for any ideas in advance,
