I did a quick Google search but was unable to find a definitive answer. Can mini split breakers be double-tapped? It seems to me, they shouldn’t be. These breakers did not appear to be designed to except two wires. Any input is greatly appreciated. Thanks guys!
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Looks like a Cutler Hammer load center , Cutler Hammer does have Circuit Breakers that can accept two wires but you have to know which ones. There is not enough information on the picture to determine the answer to your 'question. You have to get the breaker type and load info from the tags and printing on the component.
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Wrong OCPD to terminate 2 conductors on.
Refer for correction.
Have a shot of the AFCI conductor terminations?
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Thanks! That’s what I was thinking. How can you determine that this is the wrong breaker for two conductors?
I believe this to be a GFCI
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2 conductors under one lug.
Breaker label identifies how many conductors can terminate.
AFCI are 1 conductor only.
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No, I don’t believe that “mini split” breakers can have two ungrounded wires attached.
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Looks like AL wiring above the GFCI breakers.
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Stranded aluminum conductors should not an issue.
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It looked like single strand but you’re right after having another look.
Does it always state on the breaker when it accepts two grounded conductors? I feel like I should have learned this already.
I think the split breaker is Cutler’s answer for two conductors, one for each side. So, the breaker takes up less space and you get two (not 4) conductors. The label says two 1 pole units.
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Those don’t take two conductors and be careful - the panel may not be designed for the twin breakers in all locations or at all. You have to check the legend on the panel for how it was designed.
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To answer your questions.
1: Yes. OCPD Label indicates the conductor AWG and terminations. Square D & Cutter Hammer.
2: 
Not to worry. I only recently learned to hit the water in the bowl, and that’s after decades.
Just be happy. You learned something new. 
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Thanks for all of the help guys!
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