solar panel connectors

I am still trying to figure all this out. My plan so far is 2 255w panels a stated before a MPPT controller 40a or more(not sure)Big difference in price. I was thinking of use a J box and running 8awg to the controller from the roof but if I can use 10 that's fine then I don't have to use a j box and 8awg or 6awg controller to battery. There is a 40a controller($209) from Renogy that I am considering. I am trying to do this on a budget but right.

At peak two of those panes paralleled will be pushing around 20a at our altitudes. Closer to 10a in series and 8 gauge will handle either depending on the run.

I've been testing the 3 250w's in series and two things. The controller gets hot bucking down those voltages and I'm losing amps in the process. Each panel peaks at 18.5a alone but peak in series is 45-50a.

Colo Native wrote:
Are you saying to run these in series? I is that better than parallel.

That was touched on by Almot on page 1 of your earlier post.

Series v parallel post

8Awg will be close in a parallel configuration.

Almot wrote:

Colo Native wrote:
I would probably have to run to a J box then to the basement. here's a link to the paper work http://www.suniva.com/documents/OPTXXX-60-4-100%2002%2015%2012.pdf
are they MC4 made by tyco or something else

It's either Tyco or MC4. The manual says "Tyco connectors", not MC4 made by Tyco.

Don't know these particular guys, but on a brief glance they are neither unknown nor completely Chinese. 80% components are from US and Canada, this legally gives them the right to say "US manufactured".

You don't (normally) need a J-box to wire 24V panels in series. Just connect Pos to Neg between the panels and run Tyco extension cable with bare ends into MPPT controller.

Are you saying to run these in series? I is that better than parallel. I was thinking of running 8awg wire down to the MPPT controller. Or is that overkill

If you have TYCO connectors you need TYCO connectors on the wire.
MC4 will not snap in and connect with TYCO.

put 'tyco vs MC4' into google for more info.

Adapter on Amazon

Colo Native wrote:
I would probably have to run to a J box then to the basement. here's a link to the paper work http://www.suniva.com/documents/OPTXXX-60-4-100%2002%2015%2012.pdf
are they MC4 made by tyco or something else

It's either Tyco or MC4. The manual says "Tyco connectors", not MC4 made by Tyco.

Don't know these particular guys, but on a brief glance they are neither unknown nor completely Chinese. 80% components are from US and Canada, this legally gives them the right to say "US manufactured".

You don't (normally) need a J-box to wire 24V panels in series. Just connect Pos to Neg between the panels and run Tyco extension cable with bare ends into MPPT controller.

They are Suniva 255W panels and they have Tyco solarlok connectors I think there a good deal I would probably have to run to a J box then to the basement. here's a link to the paper work http://www.suniva.com/documents/OPTXXX-60-4-100%2002%2015%2012.pdf
are they MC4 made by tyco or something else

Industry standard is MC4 and H4 (same thing). At least, for large panels.

Don't know if there is any other difference, ex. connectivity or weather resistance. Extension cables exist for either type, and there are Tyco-MC4 adapters. If you find a quality brand panel for low price with Tyco - I would say go for it.
What you should worry about is getting a cr.appy connector by unknown manufacturer when buying unknown Chinese panels, and then it can be either a fake Tyco or fake MC4.