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MC4 Connectors - All Need to be used?

HARG Hunter

Thirsty for Off-Grid Knowledge
Joined
Jul 10, 2020
Messages
210
Location
Iola, Wisconsin
I have been slowly building my system.
Started with 1 panel and a long cable with an MC4 connector attached.

Then added a second panel, and thus had to buy a pair of MMF/FFM to connect them parallel.

NOW...About to add a 3rd panel.
Question is, I will most likely end up adding 1 more panel in the end.
Rather than buy a 3-Panel connector set (MMMF/FFFM), I'm wondering if it's OK to buy a 4-Way connector right away and just leave 1F and 1M "Unplugged until I get the 4th panel?

Not sure if the open/exposed port that's not being used is an issue, and if so could I put everything inside a water-proof junction box?
Otherwise I'll bite the bullet and buy a 3-way. Figured I'd try to save a few bucks and not waste an MC4 connector.

Any feedback would be great. Thanks!
 
IMHO, a spare is fine. I'd tape over it as well to protect against contamination/dust, etc.
 
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