Solar PV Connectors
Solar PV Connectors facilitate electrical connectivity in solar power systems. Numerous versions of standard solar panel connectors or junction boxes without connectors are used in the solar industry and are the main characteristic elements of solar modules like the Canadian Solar Panels.
The most common variation is MC4 (“multiple contacts, 4 mm plug”) products. MC4 components and compatible models represent the majority of solar panels in use today, like the LONGI Solar Panels. Male and female pairs are joined by hand for easy assembly. Its configuration requires the use of a tool to separate them, which makes the link more reliable in case the panels move.
Operation of Solar PV Connectors
Modern and scalable solar modules are built with cables with male or female end connectors. The locking method prevents them from being disconnected. Contact us to learn the solar connector price in Dubai and we’ll have special offers for you if you want to buy Solar PV Connectors.
Solar PV Connectors wiring
Solar configurations are wired with MC4 elements via DC positive (+) and DC negative (-) cables from each module. The typical positive cable is the male solar photovoltaic connector and the negative is the female, although this is not always the case.
When the mechanisms are joined by connecting the positive cable to the negative cable of two systems, a series connection is established. This increases the circuit voltage. When a circuit is connected in series, the maximum power current remains constant. For those who live in Dubai, you can browse the Pas Solar website or call our sales team to learn the solar PV connectors Dubai price.
Constant Voltage Wiring of Solar PV Connectors
Parallel wiring occurs when the positive and negative terminals are connected by multiple branch components or a PV combiner box to establish a link between more than two panels. This improves the current at full power while keeping the voltage even.
MC4 extension cords are comparable to electrical extension cords. As with such cables, they have male plugs on one end and female plugs on the other. When two modules are installed in series, the MC4 cables deliver the power to the electrical equipment.
Systems with two modules are implemented in applications such as recreational vehicles and boats. Solar panels for houses or cabins require longer cables, making the use of extension cords impractical. In these situations, it is mandatory to connect the extension cords to a junction box.
Trimming of Solar Panel Connectors
MC4 units are sometimes cut in half to connect to both cables from the solar panel. The solar PV connectors must provide enough cable to reach the destination in a typical installation. In systems where a combiner box is used, the length of the cut must allow the cable to terminate in the box. Then stripping the insulation from the cut ends and terminating them to busbars or circuit breakers completes the connection.
If the need arises to separate the MC4 cables, an MC4 disconnect tool is used. It features two extended posts at its end to fit into the female MC4 frame. Doing so disables the plug’s locking mechanism, allowing the drives to be disconnected. The task is based on two devices to disassemble the mechanisms.
How to use MC4 Solar PV Connectors and MC4 extension cables
NOTE: There are several solar panel connectors types. This article covers MC4 connectors, but the same principles apply to other connectors such as Amphenol H₄, Tyco, and SMK.
What is an MC4 connector (plug and socket) and MC4 extension cable (8ft, 15ft, 30ft, 50ft, 100ft)? If you’re asking yourself this question, you’ve probably noticed that most modern high-power solar modules are made with aluminium solar dc cable that has MC4 connectors on the ends. Years ago, solar modules were built with a junction box on the back that required the installer to manually connect the wires to the positive and negative terminals. This method is still used, but it is slowly becoming a thing of the past. Modern solar modules tend to use MC4 connectors because they make wiring your solar panel much simpler and faster.
The Solar PV Connectors come in male and female types that are designed to fit together. They meet the requirements of the National Electrical Code, are UL Listed, and are the preferred connection method for electrical inspectors. Due to the MC4 connectors’ locking mechanism, they will not become dislodged and are ideal for outdoor environments.
The PV connectors solar panels use can be separated, but it requires a special MC4 unlocking tool. To learn the solar connector price, contact our sales team to see if Pas Solar has a special offer for you. Alternatively, you can just browse our website to get the solar PV connectors price.
Wiring of modules equipped with MC4 in series:
If you have two or more solar modules to wire in series, solar PV wire connectors make it very simple. Take a glance at the first PV panel, and you will see that it has two wires extending from the distribution box. One wire is DC positive (+) and the other is DC negative (-). Generally, the MC4 female connector is associated with the positive cable and the male connector is associated with the negative cable.
This may not be true all the time, so it is a good idea to look at the information on the junction box or test the polarity with a digital voltmeter. A series connection happens when you link modules by connecting the positive lead from one panel to the negative lead from the other panel. The male Solar PV Connectors will fit directly into the female connector.
Wiring MC4-Equipped Modules in Parallel: Wiring in parallel requires both positive leads and negative leads to be connected. This method will increase the current at full power (Imp) while keeping the voltage constant. For example, let’s say your modules are rated for 8 amps Imp and 18 volts Vmp. If you connect two of them in parallel, your total amperage would be 16 amps Imp and the voltage would stay at 18 volts Vmp.
When wiring two or more PV panels in parallel, you will need some other equipment. If you are only using two modules, the easiest method is to use MC4 multi-drop connectors. You can’t connect two male connectors or two female connectors, so we use multi-branch connectors to achieve this. There are two different multi-drop Solar PV Connectors. One type accepts two male MC4 connectors on the input side and has one male MC4 connector for its output. The other type accepts two female MC4 connectors and has one female MC4 connector for its output.
Essentially, you’ve reduced the number of wires from two positives and two negatives to one positive and one negative. Here’s a diagram, so you can see what it’s doing. If you’re asking yourself “how can I find solar panel connectors near me?” contact the Pas Solar sales team.