Forum Discussion

howardwheeler's avatar
howardwheeler
Explorer
Mar 27, 2017

What are the differences in a T4 connector and a MC4?

I've never hooked up solar panels before and now face two different connectors: T4 and MC4. Is one better than the other or more suitable for particular applications? And most important, do they plug...
mike-s's avatar
mike-s
Explorer
Mar 28, 2017
It's common to use 2 contact SAE connectors (they're like the common 4 wire flat trailer connectors). You can find them with 12 ga wire, which should be good for a couple of 100W panels, albeit with some loss. It's pretty common to find them pre-installed on RVs as part of a "solar ready" package. But, they're usually just wired straight to the battery, and the portable panels are expected to have their own controller.

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