These are the solar panels you see on your neighbors rooftop. They are known as grid-tie solar panels or high-voltage solar panels. When used in a grid interconnected system, panels are connected in series to achieve voltages of 600VDC and 1000VDC. The high DC voltage is then converted to AC voltage compatible with the utility grid. It is also possible to use micro inverters, where you have an inverter for every solar panel instead of a central inverter. Solar panels for interconnection are available with different characteristics. They can be either monocrystalline or polycrystalline . Some models offer the anodized aluminum frame in black color, while other models also offer an all-black module (with black frame and black background), thus improving the final appearance of the solar array. All grid-tie solar panels come with connection cables. These cables are fixed, they cannot be cut nor removed. The connection cables are double insulated and are made of materials resistant to UV rays. They allow for an easy connection of the modules and ensure that all connections are safe and rated for outdoor use. The end connectors on the cables can be composed of different types and might not always be compatible with each other. The most common connectors are Multi -Contact (MC), Tyco and Amphenol.