SANYO MC3 to MC4

[valet]

Hi to everyone

Just to confirm, can DC 4mm cables be connected to 6mm Panasonic panels cables? Not sure if cables with different diameters can be connected together. I think Gavin already answer that question above. Confirmation will be appreciated. Regards

 

[Worcester]

@valet, I'd be astonished if panasonic use 6mm2 cables - do they really? ( I could be wrong..)

OR have you measured the outside diameter?

Just do your cables sizing calcs as always, Current Carrying capacity and Voltage Drop.

 

[Eco Deal]

jesus you dug up an old post here .

 

[valet]

Panasonic panels cables definitely 6mm they are the same as Sanyo panels and still have MC3 connectors on them they ment to be updated new Panasonic panels with MC4 / SMK connectors from Sanyo.
It will be ok to connect them in to 4mm DC, Or I have to use 6mm DC cable? Is it much of the difference between 4mm and 6mm DC cable, distance from panels to inverter between 10- 15 meters. Thanx

 

[Worcester]

What is the length of the string run? How many panels in a string?

I's a standard cable sizing excercise, so you can easily calulate the cuurent carrying capacity and the voltage drop. - Sunny Design will even do it for you

 

[SolarCity]

The size of the Sanyo/Panasonic panel cables is irrelevant. No issue connecting 4mm to 6mm panel cables at all as long as the VD calculations have been carried out (which unless your inverter is a long way from the panels, this will not be an issue either)

 

[valet]

Thanx for that boys.
Ten panels all on one string divided in too three roof spaces. Longest string is about 12- 15meters away from inverter.

 

[SolarCity]

Definitely not an issue then. We've only ever used 6mm once for a domestic install.

 

[valet]

Can non-branded Chinise MC4 connectors can be connected to genuine Multi-Contact MC4? Any risk fire/ overheating as Chinese not TUV approved .
Panasonic/Sanyo panels still coming with mc3 connectors ; ( !!!
My dc strings have Chinese non branded MC4 connectors should I ask installer to replace them to multi-contact Swiss made MC4 and use adapters mc3 to MC4.
Or just put new multi-contact mc3 on dc strings to avoid adapters usage?