What is an MC4 connector used for?

An MC4 connector joins solar panel output cables in a string. It is the standard pv connector for outdoor DC use. Most South African solar panels come with MC4 connectors pre-fitted on the cables.

Do I need a special tool to fit MC4 connectors?

Yes. A mc4 connector crimping tool crimps the metal pin onto the cable correctly. A loose connection causes heat and failure over time. A proper mc4 connector crimper gives a secure, low-resistance joint.

What is the difference between an MC4 and Anderson plug?

A solar cable connector like the MC4 suits higher-voltage panel string wiring. An Anderson plug handles higher current at lower voltage for battery connections. The mini Anderson plug to MC4 adapter connects these 2 systems where needed.

Are Anderson plugs weatherproof?

Standard Anderson plugs are not fully weatherproof. They are best used in sheltered or indoor locations. MC4 connectors are rated for outdoor use on rooftop and ground-mount systems.

What cable size do MC4 connectors suit?

MC4 connectors suit 4mm² and 6mm² solar cable. These are the standard sizes for South African residential and commercial systems. Always match the connector to the cable cross-section when crimping.