Can Solar PV Cables Be Mixed with Ordinary Cables?
When connecting a PV panel, if you’re missing the last few meters of PV cable, can you replace them with a normal cable?
The answer is no.
What Is a Photovoltaic (PV) Cable?
A PV cable is specifically designed for connecting PV panels. It features a double sheath made of XLPO and a conductor made of tinned copper. Common standards include EN50618, UL4703, and 62930 IEC 131. These standards ensure high UV protection, crucial because PV cables need to maintain performance after long-term exposure to sunlight and harsh weather conditions.
Why Can’t Regular Cables Be Used?
Regular cables (such as household wires) typically have PVC sheaths and pure copper conductors. Unlike PV cables, PVC sheathed cables have a maximum temperature tolerance of 80°C, while PV cables can withstand up to 125°C. Additionally, regular cables are NOT UV resistant, making them unsuitable for long-term outdoor use, particularly under prolonged sunlight exposure.
Summary:
To ensure the safe and stable operation of your photovoltaic system, you must use dedicated PV cables. Using regular cables could lead to premature failure, potentially requiring replacement within a few weeks.
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