MC4 Cables & Adapters
An MC4 extension cable is very similar in concept to an electrical extension cord. Just like an extension cord has a male plug on one end and a female plug on the other, an MC4 extension cable has a male connector on one end and a female connector on the opposite end. They are available in many different lengths from 8 feet to 100 feet long. Lets go back to our first example of wiring two modules in series. Once you’ve got the two modules connected in series, you need to use MC4 cables to bring that power to wherever your electrical equipment is located (usually a circuit breaker and a solar charge controller).
MC4 Extension 100ft
MC4 Extension 100ft cables are typically used to run from the solar panel(s) to the charge controller or combiner box.
Features:
- snap together, multi-contact hard plastic connectors on each end
- cable comes with a male connector on one end and a female connector on the other end.
- Made with black #10 AWG USE-2 sunlight resistant cable.
MC4 Extension 50ft
MC4 Extension 50ft cables are typically used to run from the solar panel(s) to the charge controller or combiner box.
Features:
- snap together, multi-contact hard plastic connectors on each end
- cable comes with a male connector on one end and a female connector on the other end.
- Made with black #10 AWG USE-2 sunlight resistant cable.
MC4 Cable Adapter
The MC4 Multi Branch Connector is used with the MC4 extensions when two solar panels are configured in parallel.
When you purchase the Y cable adapter you will receive the two pieces shown in the photo.
MC4 Extension 30ft
MC4 Extension 30ft cables are typically used to run from the solar panel(s) to the charge controller or combiner box.
Features:
- snap together, multi-contact hard plastic connectors on each end
- cable comes with a male connector on one end and a female connector on the other end.
- Made with black #10 AWG USE-2 sunlight resistant cable.
MC4 Extension 15ft
MC4 Extension 15ft cables are typically used to run from the solar panel(s) to the charge controller or combiner box.
Features:
- snap together, multi-contact hard plastic connectors on each end
- cable comes with a male connector on one end and a female connector on the other end.
- Made with black #10 AWG USE-2 sunlight resistant cable.
MC4 Extension 8ft
MC4 Extension 8ft cable are typically used to run from the solar panel(s) to the charge controller or combiner box.
Features:
- snap together, multi-contact hard plastic connectors on each end
- cable comes with a male connector on one end and a female connector on the other end.
- Made with black #10 AWG USE-2 sunlight resistant cable.

MC4 RV Cable Kit
MC4 25ft RV Cable Kit. Cables are typically used to run from the solar panel(s) to the charge controller or combiner box.
Features:
- 25 feet of MC4 XLPE Black Sun resistant 10 gauge cable PV-1019-UL-02
- 25 feet of MC4 XLPE RED Sun resistant 10 gauge cable PV-1019-UL-02
- MC4 M/F connector Assembled with wire