Can you explain to me what your pass through box is? Does the ground wire from the mounting rail go into the box and directly to the inverter? Did you use PVC or metal box? PVC conduit or EMT? If a metal box, did you attach it to the rail, run the rail ground wire into the box, ground it to the metal box, and run another ground wire from the box to the inverter?
@@ridemfast7625 elecrical code is required to wire ground the equipment no matter metal or plastic boxes or inventer. In case of DIY local authority can tell what it is proper ground wire to get permission.
Good instructional video! I noticed in other prebuilt combiner boxes that a surge protection is provided. When would you recommend to include an SPD in the combiner box?
There is some ambiguity on the DC side fusing and/or disconnect sizing in your videos that do not tie the two together very well. Question: If you have a non-fused disconnect in a combiner box, my understanding is that you size the fuses Isc*1.25 = Imax *1.25 for continuous current = Isc * 1.56 for the individual string fusing. The main disconnect then can be sized to match the Isc*1.25*1.25*# strings OR if the disconnect is 100% rated, it only needs to be sized Isc*1.25*# of strings. This could save $$$ in some cases. Is this the way NEC intended the sizing in a combined string fusing/combiner box? It seems to be the case with the caveat that the upstream fusing and wiring (i.e, path from combiner box to inverter) still needs to be sized the extra 1.25 even if using a 100% rated non-fused disconnect in the combine box
These ATC automotive type fuses and holders shown are not rated high enough voltage for this application. And using an un-insulated bus bar and tossing into the enclosure?? What gives! This is horrible.
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Fantastic stuff! Thank you.
This video really impressed me. Densely packed with practical information in a good time order and delivered in a clear way. Earned my subscription
Very groovy, thanks.
Took my algorithm long enough to look at my pictures and talk baout it
Gr8 explanations thank u so much
In understanding this was for display purposes, using bus bars like that is sketchy at best. There are much better devices for junctions.
This! It seems like all 3 conductors are touching in the end.. man seems dangerous!
Would 4 strings going straight to the inverter need fuse protection in a pass thru box? Thanks keep rockin
Can you explain to me what your pass through box is? Does the ground wire from the mounting rail go into the box and directly to the inverter? Did you use PVC or metal box? PVC conduit or EMT? If a metal box, did you attach it to the rail, run the rail ground wire into the box, ground it to the metal box, and run another ground wire from the box to the inverter?
@@ridemfast7625 elecrical code is required to wire ground the equipment no matter metal or plastic boxes or inventer.
In case of DIY local authority can tell what it is proper ground wire to get permission.
is it legit to have those two terminal blocks loose in the enclosure? couldn't they short by touching each other or through the metal enclosure??
Good instructional video! I noticed in other prebuilt combiner boxes that a surge protection is provided. When would you recommend to include an SPD in the combiner box?
Does anyone know where to find the 2 hole liquid tight connector? I can find a 3 hole, 4 hole and the romex one, but none that have just 2 holes.
Some other videos say that wire nuts should not be used with PV wires... any thoughts on why they say this?
Does 230v fuse work 12v system
There is some ambiguity on the DC side fusing and/or disconnect sizing in your videos that do not tie the two together very well. Question: If you have a non-fused disconnect in a combiner box, my understanding is that you size the fuses Isc*1.25 = Imax *1.25 for continuous current = Isc * 1.56 for the individual string fusing. The main disconnect then can be sized to match the Isc*1.25*1.25*# strings OR if the disconnect is 100% rated, it only needs to be sized Isc*1.25*# of strings. This could save $$$ in some cases. Is this the way NEC intended the sizing in a combined string fusing/combiner box? It seems to be the case with the caveat that the upstream fusing and wiring (i.e, path from combiner box to inverter) still needs to be sized the extra 1.25 even if using a 100% rated non-fused disconnect in the combine box
wire nuts will burn at 100 amps
These ATC automotive type fuses and holders shown are not rated high enough voltage for this application.
And using an un-insulated bus bar and tossing into the enclosure??
What gives! This is horrible.