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scubacollie avatar image
scubacollie asked

Victron Solar Panel Wiring

Hi All, I'm about to purchase the 175W Victron Mono Solar Panel.


2 questions...


1 what size is the wiring coming out of the solar panel? I need to purchase more wiring to reach the rear of the van (panel going at front of long wheel baser Fiat Ducato and batteries at rear of van) and I was going to purchase 6mm size cable, however depending on size of cable coming out of panel, because I'd it's only 4mm coming out, then it's pointless purchasing 6mm cable to connect to that?

2. I'm assuming there is cable coming out of it? Do I have to purchase special Victron cables to lengthen it, or can I just cut the connectors off the ends and crimp any type of solar cable to it to extend it, as i need to route behind wall panels in a van and would be a lot easier without any connections on the end of it!!??

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Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

The cable is 4mm² and about 900mm long with standard MC4 connectors.

Using 6mm² from the Panel to the MPPT can make sense to reduce power loses but it depends on the cable length, how many panels you use and how they are wired together (parallel or series).

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scubacollie avatar image scubacollie commented ·
Many Thanks mate, length will be approx 3.5 meters, with 1 x 175W panel.


Would it be better to wire in 6mm? Can the 4mm be disconnected from the panel and new 6mm connected from the panel onwards?


Sorry for all the questions but don't have the panel yet therfore don't know what the connection on the back of the label looks like I. E is it hard wired into the panel or via a termination housing/terminal?

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