These are solar mc4 connectors the female is on the bottom and the male plug is on top.
How to install mc4 solar panel connectors.
Feed the mc4 terminal pin onto the copper stripped end of the cable.
By crimping the terminal onto the cable you are securing the copper cable to the contact for a secure power connection.
We are using a mc4 2 5 4 6mm crimp connector for this because it gives a great connection.
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Use a crimper to crimp and secure the contacts of the terminal.
Details on how to install renogy s mc4 connectors onto a multi stranded copper cable.
How to install mc4 connectors step 1 strip the solar panel cable to expose approximately 3 8 of the stranded copper cable step 2 crimp terminal well and put the terminal to the connector directly.
I still personally prefer a water tight j box and water tight entry gland but not all panels ship that way.
Using solar spanner to slide the strain relief grommet and nut back onto the mc4 connector.
Mc4 solar connectors step 1.
You will notice the wire is stripped shorter than the metal crimp connector.
How to correctly install mc4 connectors for your solar panels step 1.
Ensure to feed your screw cap.
Feed the cable gland on in the correct direction.
Mc4 male connector fitting.