712.521.103 Wiring loops
To reduce the magnitude of transient overvoltages, the PV array wiring shall be laid in such a
way that the area of conductive loops is minimum (e.g. by laying cables in parallel as shown
in Figure 712.10)
712.521.103 Wiring loops
To reduce the magnitude of transient overvoltages, the PV array wiring shall be laid in such a
way that the area of conductive loops is minimum (e.g. by laying cables in parallel as shown
in Figure 712.10)
Comments are my opinion, unless regulations are attached to support the comment. This is social media, not a court room.
There is a reason to keep the 2 DC wires close as possible(parallel), being DC, there is a magnetic field created around the wire if it is individual. Having both close to each other cancels this magnetic field.
Understanding that the wire could be similar to a wire in a generator, it can induce voltages in any other wire running close. Now in most cases there is a a high DC current flowing, and high lights how strong these magnetic fields become, now imagine the same thought with respect to battery supplied cables pushing +100A.
Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
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I have seen installations where the panel wiring goes along the top pos. to neg. around the outside, then down to the next string and along the bottom and back up to top, creating a nice big loop.
Some installations, every second panel is flipped also creating anice big open loop.
Then you get the one where the pos. is on the left and the neg. is on the right of the string.
But hey people learning as they go, there is still a lot to learn and unfortunately the customer is going to sit with the problems.
Comments are my opinion, unless regulations are attached to support the comment. This is social media, not a court room.
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