A:AnswerDepending on the length of the cable and the wattage of the device, you can use 8 awg cables. This gauge is suitable for 2 feet at 2400W (peak) or 4 feet at 1200W (continuous).
A:AnswerThe inverter can support 1200 watts of continuous power, and must be connected to a 12V system. Most tvs do not use 1200 watts, so it should meet your needs.
A:AnswerNo, for an Instant Pot you will want a current rating of 8-12 Amps depending on the model of your Instant Pot. This inverter is designed for 4 separate circuits at less than 2.1 Amps each. You cannot combine them to run higher powered appliances.