Renewable Energy Products and Solutions.  High quality products, best prices with helpful, friendly and professional advice.   Tel: 0208 663 3273     Fax: 0208 650 9037     email: sales@brightgreenenergy.co.uk



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Solar Cable and Solar MC Connectors

 

We sell solar cable and solar panel connectors. Please refer to list below. If you are seeking guidance on wiring solar arrays then please refer to notes further down this page or give us a call on 0208 663 3273

Solar Cable with Pre-Installed Connectors:

We offer a very competitive customised cable and connector service and can supply any length of solar cable complete with the required connectors pre-installed to suit all your requirements.  Let us know what length of cable and how many connectors you require and we'll let you know how much it costs. All cable and connectors are guaranteed to be genuine.

PV-Cable assemblies

Item Code Description Price
CAMC4500 MC-4mm2 Solar Cable (500m Drum) £1.59 per metre
CAMC4100 MC-4mm2 Solar Cable (100m Drum) £1.69 per metre
CSCSMC4 Customised Solar Cable with Pre-installed Connectors. 

Cable: MC-4mm2 Solar Cable (Any length from 1m+)

Specify your requirement
CAMCNEG MC-4mm2 Type3 Negative Connector £3.82 each
CAMCPOS MC-4mm2 Type3 Positive Connector £3.82 each
CANEGBRANCH MC-4mm2 Type3 Negative Branch Connector £9.55 each
CAPOSBRANCH MC-4mm2 Type3 Positive Branch Connector £9.55 each
CAMC6NEG MC-6mm2 Type3 Negative Connector £3.82 each
CAMC6POS MC-6mm2 Type3 Positive Connector £3.82 each
CAMCNEG4 MC-Type4 Negative Connector (SolarWorld) £3.95 each
CAMCPOS4 MC-Type4 Positive Connector (SolarWorld) £3.95 each

 

Solar Cable and Connectors

Type 3 4mm2 Solar Cable and Connectors

Type 3 4mm2 Solar Cable Branch Plug

Type 3 4mm2 Solar Cable and Connector Set
 

Type 3 MC Cable & Connectors Type 3 MC Branch Plug Type 3 MC Cable Sets & Connectors
     

Solar Cable MC 4mm2

Type 3 Positive and Negative Cable Connectors

Type 4 Solar Cable Connectors

MC Flex Sol Solar Cable
Available in different colours

Top: PV-Male cable coupler

Bottom: PV-Female cable coupler

 
Type 4 Cable & Connectors
Download the MC catalogue here

Typical Solar Panel Connections with Connectors

Solar Panels and Inverter Connections
 


 

Soalr Panel Parallel Connections and Branch Connectors

Solar Panel and Inverter  Connections

Solar Panel Parallel Connections using Branch Connectors
     
Assembly Tools
If you want to install your own 2.5mm2 or 4mm2 connectors you will need these tools. Call for pricing.
Name Description  
Crimping Pliers - PV-CZ  

Crimping pliers PV=CZ for cable cross section of 2.5mm2 and 4mm2

 

Crimping Pliers for 2mm2 and 4mm2 Solar Cable
     
 

Assembly device PV-RWZ3

 

 

For assembly of the cable coupler

PV-KBT3... and PV-KST3... incl. tapered spindles. Suitable for on-site use, e.g. on the roof etc.

 

Solar Cable and Connectors Assembly Device

 

Essential Information

Once a solar panel is exposed to light it will generate electricity. Working with electricity is dangerous and care needs to be taken.  If you have any doubt about working with electricity then consult a qualified electrician.

  • Working with solar PV arrays can be extremely hazardous.

  • Solar panels produce a voltage when exposed to light.

  • Solar panels connected together in an array are often configured to produce high voltages. Panels can be connected in series or parallel.

  • Solar panels connected together in an array will always produce a voltage even if there is a fault with the panel.

  • Opening and closing any contacts while the solar array is under load will lead to arching at the contacts and these can be dangerous.

  • Fuses and circuit breakers do not operate like their AC counterparts.  

Take all the precautions necessary before installation,  during installation and when testing the solar array.

DC Cable Installation- General Guidelines

  • Cable should always be double insulated and polarized.

  • DC Connectors should always be used.

  • Cable or fuses should never be disconnected when under load.

  • Cable from the solar pv modules should follow the shortest route to the array combiner boxes.

  • All DC cable should be clearly identifiable

  • Cables should be laid in parallel and loops should be avoided - except where they enter a building

  • Cables should never be lain in a hazardous space.

  • Cables should never be paled near to lightning conductors.

  • Cables should always be tested for polarity in accordance with specified regulations.

DC Wiring - Modules and Strings

Care must be taken when connecting modules into strings. This applies when connecting modules together in series - the positive of one module is connected to the negative of another and so on.

All cables must be given string numbers - for ease of identification later on and when testing for faults etc.

Testing

When testing solar modules the following applies:

  • Testing for polarity - ensure that DC polarity is correct and that the positive wire core is used only for positive connections and negative wire core is used for negative connections.

  • Check that the open circuit voltage of the string equals the sum of the open circuit voltages of all modules in the string.

  • Check the short circuit current of the string against the datasheet for the appropriate module used. 

Power Losses and Voltage Drop in Cables

Power losses in DC systems are due to voltage drop.  Stand-alone DC systems typically operate at a lower voltage, 12V, 24V or even 48V DC.

Care must be taken when selecting the size of the cable to be used. If too small a cable is used then the voltage drop increases and in an off grid or stand alone system this can have a major impact on stand alone systems where the battery voltage is lower than expected.

Volt drop can be calculated from the formula: V = I x R,  where V is the volt drop in the cable (V), I is the current in the cable (A) and R is the resistance of the cable is (ohms. Note resistance depends upon the length of the cable and cross sectional area (CSA) of the cable.

Resistances for Metric Cable

Conductor cross sectional area (mm2) Resistance in Ohms per metre
2.5 0.0074
4 0.0046
6 0.0031
10 0.0018
16 0.0012
25 0.00073
35 0.00049

Example: for a 6mm2 cable, 100m long, carrying a current of 20A, the voltage drop = 20A x 0.0031 = 0.062V per metre.   For a cable length of 100m the volt drop = 12.4V.

 

 
   

PLEASE CALL US TO DISCUSS YOUR REQUIREMENTS 

CALL US NOW ON

0208 663 3273

FOR PRICING AND FURTHER INFORMATION
 

 


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