Some Information About PV Solar Connectors


Leader@ Solar Connector is the name of the connection type on all new solar panels, providing an IP67 waterproof and dustproof safe electrical connection. 

The Leader@ Solar Connector work best with 4 mm and 6 mm solar cable.

When you buy any new solar panel (usually over 30 Watts) it will be already fitted with two 500 – 900mm leads with Leader@ Solar Connector attached for you to get the power safely out of the solar panel.

Great, but how do you get the power from the panel on an outbuilding roof to your controller 20 Metres away ?

You can buy pre cut leads from 2 Metres to 10 Metres,We sell these, but a more efficient way is to buy the cable which you can cut to the exact length you need and then attach MC 4 solar connectors.

We offer a custom cut length cable with MC 4 solar connectors fitted service, if you do not feel confident enough to tackle this yourself.

The picture above shows all the parts for the male and female connectors.

All you need is the cable, a male and female Leader@ Solar Connector, wire strippers, some wire crimps and about 10 minutes of your time.

Step 1: solar male connector fitting

You will notice the wire is stripped shorter than the metal crimp connector.There is a mark on the metal to indicate how far the other connector will enter into this one, if your cable extends past this mark in the connector you will not be able to join the solar connectors together.

Recommended cable stripping length is between 10 – 15mm.

Step 2: Crimp the cable

We are using an solar 2.5 – 4 – 6mm crimp connector for this because it gives a great connection every time and holds all the bits in place when you crimp.

Step 3: Nut on first

Pass the screw nut over the metal crimp first

The plastic housing has a non return clip inside and if you have not put the nut on the cable first you will not be able to get the plastic housing off without damaging it rendering it unsafe to use.

Step 4: Insert the cable

When you push the crimped cable into the connector, you will hear a “CLICK”

This is the non return clip locking the crimp into the plastic housing.

Step 5: Rubber washer

Looking closely at the picture you will see that the rubber seal washer is flush with the end of the plastic fingers around the cable.

This will give the best grip on 4mm cable when the nut is tightened onto the plastic housing.

If you do not do this with 4mm cable the connector will be able to spin around the cable and over time may damage the connection.

Step 6: Female crimp

We put a little bend in the cable for better surface contact inside the crimp.

This cable insulation is stripped by 15mm to expose the wire for crimping.

Crimp the same as the male in step 2.

Step 7: Insert the cable

Again pass the screw nut over the cable first ( step 3 )

Check the rubber washer as in step 5

Then push the crimped cable into the female housing untill you hear the “CLICK”

Tighten the nut onto the female plastic housing.

Step 8: Test before connecting

We would advise you to test the continuity of your cable with the new Leader@ Solar Connector on before connecting to your solar panels or charge controller.

This will confirm you have a good connection that will last for years.

Please remember never disconnect the connectors when the sun is on your solar panels or they are connected to a battery, you may be injured by your free green electricity.

Stay safe and thank you for looking at our Leader@ Solar Connector connection guide.

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Key pillars for shining success

As a manufacturing and solutions-driven company, Leadergroup has supported some of the world’s largest and most challenging solar power plants. From consulting and design, construction to maintenance, our global team of PV experts will ensure your system is optimally connected for maximum efficiency, safety and profitability.

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The success of any solar photovoltaic (PV) plant comes down to reliable, efficient and long-term performance. With Leadergroup Renewable Energy as your partner, you benefit from our high precision solutions and decades of experience harnessing solar energy.

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