In the US typical household power consumption is about 11,700 kWh each year, in France it is 6,400 kWh, in the UK it is 4,600 kWh and in China around 1,300 kWh. The global average electricity consumption for households with electricity was roughly 3,500 kWh in 2010.ur household electricity use has been 2,000 kWh each of the last few years, which means it is about 700 kWh per person. We benefit from not using electricity for heating or cooling, although our electric oven is a big source of demand.
THHN stands for Thermoplastic High Heat Resistant Nylon, so just from the name we are able to tell that the wire is made of thermoplastic material, can withstand high temperatures, and features a nylon jacket.
Both THHN and TFFN wires are used as general purpose wiring, for appliances, machine tools and control circuit wiring. Although only TFFN 18 1 can be used as a dog fence wire. THHN is not ideal to be directly buried underground. TFFN is used on 16 and 18 AWG size only. It's not available in bigger sizes and is dual rated THHN/THWN. THHN vs. TFFN works the same way with only little differences. They both fall under the electrical wire category also known as building wire because contractors mostly use them for buildings and homes.