2m LED stripe/288 Neopixel with Raspi: power source and cable

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1

Hello,

regarding

https://shop.pimoroni.com/products/flexible-rgbw-led-strip-neopixel-ws2812-sk6812-compatible?variant=30260032733267

Two meters of that controlled by Raspberry Pi (3B): does it need a separate power source and what cable diameter is needed for 3 to 4m of cabling?

Thanks, Lutz