[Solved] Connecting Photovoltaic Panels: Induction Loop, Cable Length & Parallel Wiring Tips

The question is how the induction loop is arranged, is it possible to reduce the length of the cable without creating a loop and is it only right to run the cables in parallel, adding a dozen or so meters of cable?

Drive from the top right left
Go down (2m cable) and drive right .. (shortest route)
Why combinations like yours?

In order not to create the so-called the induction loop that I mentioned need to run the other pole in parallel, so there is an additional 15m of cable.

It's ok only the rightmost + with the second bottom _ on the right connect. The beginning of the pit change (rotate). If you have meter-long cell cables, you only use them. You only pull 2 wires to the inverter. You avoid pressing the connectors except for 2 pcs to the inverter.

And how is the field of the induction loop distributed in the diagram above.

You have to lead the wires in parallel and add a cable.
Simple and effective.

Theoretically, it is still possible to "unscrew" the loop.
For example, transformer coils should be arranged in one direction, usually clockwise, but it can also be done counterclockwise.
If, on the other hand, we arrange half of the coils clockwise and the other half counterclockwise (you can make a mistake by manually winding the second layer of coils), the winding will lose its inductance and will behave similarly to a straight wire.

Of course, this type of fun with PV does not make sense and the cable is so cheap that its costs in small installations are negligible.
It should be noted that by arranging the cables in parallel, we can easily and effectively achieve this effect in a natural way, by extending the cable but not combining it.

The question was how the induction loop is arranged in this scheme.

Waldemar-VUK wrote:

the question was how the induction loop is arranged in this scheme

The diagram shows the connection topology of the individual panels. There is no specific information here on how the cable is routed, so it is difficult to determine how the "induction loop" is arranged. The principle that the return line should follow the line of the supply line.

Kisses
- GIFT-

Everything is in this drawing - the panels are connected in one circuit.

Nobody can visualize the loop?

And isn't it better to route the cables like in the picture above?

The induction loop on your project will look something like this:


The entire field shaded in blue is a loop.
Sorry for not very skillful drawings.
greetings

maybe the wires that I am going to lead will be in one line, so next to each other and the second thing I will improve with the first two panels to eliminate this zone

Waldemar-VUK wrote:

maybe the wires that I am going to lead will be in one line, so next to each other and the second thing I will improve with the first two panels to eliminate this zone

Now I understand.
However, this is a bad idea in my opinion. You will have to crimp quite a few connectors on the cables.
Each such crease is a potential additional problem with possible heating of the joint, etc.
If you pull the "return" cable in parallel, you will only have 2 folds in the connectors on the roof.
In my opinion, it makes no sense to combine to save a few meters of cable.
However, if you want to insist on kneading, you can as well solder these folds, which will ensure less heating on the connectors.
Practice shows that heating badly crimped or incompatible fittings is one of the most frequent causes of installation problems, including fire.

There is another thing:
Even though your diagram is formally correct, the connection method is unnecessarily complicated.
By creating such structures and combining them in unfavorable conditions on the roof, you can make a mistake and destroy the elements. The chance for such a mistake increases quickly if after some time it was necessary to remove something and connect it again.
The beauty of engineering is to make structures * simple * and reliable.
Unnecessary complications only make life difficult and are not a good sign of the Designer.
I have seen handles for a toilet seat consisting of about 20 parts or 12 bearing fishing reels, but in my opinion such ideas are the worst evidence of anyone who designed such a thing.
In addition, they break down quickly.

so you can connect without return wire the assumption was to eliminate the return cable and not create a loop, but it is faster only with more cable

Like my colleague Waldemar, I have no additional connector. Panels with 1 meter cables are sufficient. Only panels alternating at 180 degrees. every second . Then it's ok.

But alpine combinations
And you can, for example, like this:

I have a half-cut 33pcs. in 3 rows of 11, all connected only panel-panel. Panels flat on the roof. The only personally pressed connectors are these 4 cores coming from 2 strings from panels to the inverter.

Gentlemen, since there is the only right way to connect - with + and a panel next to the panel, it would be enough for a dozen cm of cable with a connector and, apart from the rest of the facts, why is there over a meter of cable there?
The second thing, is it possible to turn the panels so that the poles are not - + and e.g. + +, there is nowhere marked on the panels where the top or information should be, is it possible to arrange the panel with the longer side?
Maybe I'm picking on but it's probably worth asking if there is who

Everything is in the assembly instructions. I have Longi and I have quite extensive instructions, where, among others, there are several connection variants depending on the mechanical installation.

A colleague boast of this assembly instruction

Added after 3 [minutes]:

The panels have central wires on the sides directed to the outside of the sides, so by 180 degrees the poles change, the rest remain unchanged

Gentlemen, do you give a conduit for the cables between the panels, can you, 6mm? solar cables without a conduit?
Roof mounting.
Because if you need a conduit, it's probably a larger diameter conduit so that the connectors pass.

And the assembly instructions for wello are said to have one

Added after 16 [minutes]:

Edek45 wrote:

Gentlemen, do you give a conduit for the cables between the panels, can you, 6mm? solar cables without a conduit?
Roof mounting.
Because if you need a conduit, it's probably a larger diameter conduit so that the connectors pass.

The cables are designed to be resistant to weather conditions.

Waldemar-VUK
https://lmgtfy.com/?q=longi+mounting+manual

Gentlemen, please comment on the induction loop. Is it necessary to lead the "red" return wire to the extreme 3 modules (left side) from the second 6-module row or is it enough as shown in the picture ?! If you have better ideas, please let me know.
greetings