Smaller alternative to MC3 connectors for parallel connection

[fishplug]

As per the title, I'm looking to connect my 3 panels in parallel but would like to find a solution that is more compact.

I was considering using a 3 way Wago block inside a waterproof enclosure, but they only go up to 4mm and I've got 6mm cable...

I looked at the option of putting lugs on the ends and connecting them to a 2 way busbar, but can't find a waterproof one.

Needs to be rated to 30A

I'd like a mechanical connection rather than a soldered one and even better if it's removable / detachable in case I ever need to replace a panel.

Any suggestions?

 

[Lenny HB]

I always use MC4's, they tuck neatly out of the way under the panels don't see the need for a smaller connector.

 

[fishplug]

A single MC4 inline connector would be fine. It's just the 3-way ones for parallel connections that I find too large and awkward to securely mount where they're not going to rub on anything.

The inline ones can easily be cable tied and wouldn't be a bother. That's what I've currently got, but I'd prefer the panels not to be in series.

 

[Fat Albert]

I have just removed and refitted my solar panels and to keep the cables and connectors off the roof used plastic trim from around double glazed windows across the width of the solar panel and sikaflexed inplace. Strategically placed to hold up the loose cables and the MC4 connectors and held loosely with cable ties.

 

[fishplug]

Ok, so my current thinking is to DIY a "single pole" busbar.

i.e. put terminal crimps on the end of the cables, slide them into a waterproof enclosure and stick a bolt through them to make the connection.

Can't imagine that would cause any problems, and an M4 bolt has to be rated to more than 30A you would think...

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[Carpmart]

XT60’s. There are suppliers offering parallel blocks.

 

[fishplug]

Oh! I've been looking for exactly that sort of thing. Hadn't specifically searched for XT60 but....


.....hmm.

It looks like these are just normal XT60's that have been soldered together and then had heatshrink put over them.

The bolt is still in the lead as my preferred method....