How Did The Old Electrician Choose A More Perfect Photovoltaic DC Cable for The Solar Photovoltaic System?

At present, due to the wide variety of wires that can be used in solar power stations, how does the average old electrician choose the correct photovoltaic DC cable for your solar system? Choosing the wrong type of photovoltaic wire or cable may cause overheating and energy loss. Next , we'll give you some easy-to-follow essentials so you know exactly what to buy.

Photovoltaic cable selection

Follow these steps to choose the correct PV cable: Make sure the PV cable is rated for voltage equal to or greater than the system’s voltage rating Make sure the current rating can handle the system’s current output Make sure the PV cable is coated to withstand environmental abuse. Always check for voltage drop

Using the correct PV DC cables is important for performance and safety. Photovoltaic cables transfer energy from one component to another in order to convert solar energy into electricity.

Things to note:

1. Dimensions of photovoltaic cables (size and diameter)

2. Length of photovoltaic cable

3. Composition structure of photovoltaic cables (solid or stranded)

4. Materials of photovoltaic cables

5. Voltage and current ratings

Solar Array Photovoltaic DC Cables - connects solar panels and junction boxes together, they must be resistant to moisture, UV rays and extreme temperatures due to exposure to the environment, Appliances - use traditional photovoltaic wires on 120V solar systems, battery cables - Connect batteries together to form battery storage for solar systems.

When to use thin PV cables or thick PV cables?

If you wish to generate more current and transmit it over longer distances, make sure to purchase thicker PV wires for your system.

Photovoltaic cable conductor structure

Solid or stranded conductors?

PV cables with stranded conductors are more flexible, so you can rearrange PV cables and bend them without fraying.

Material

Copper and aluminum are most commonly used in commercial and domestic installations.

Copper conducts electrical current better than aluminum and is more flexible and heat resistant than aluminum.

Aluminum wire is stiffer when bent. Aluminum wire comes in larger gauges and is primarily used for outdoor installations, such as service entrances.

However, in photovoltaic applications, copper wires are often used to prevent energy loss and are more durable than aluminum wires.

To join copper and aluminum wire or cables together, use splice connectors. Connecting each wire individually reduces corrosion susceptibility.

Voltage and current of photovoltaic cables

Thicker wires have less resistance and can carry more voltage when using longer photovoltaic wires. If there is a way to fight the voltage drop, it is to increase the wire gauge. For a 12V solar system, the photovoltaic cable should be thicker to carry more current. Learn more about the difference between 12V and 24V systems here.

PV cable length

The length of the PV cable is an important factor. The longer the PV wire, the better the transfer of current, which also increases the cost based on your setup, and it also starts to lose more voltage through resistance and heat.