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.
THHN is not made for direct bury. And copper, over time, will turn back to its original state or earth. The locate signal will no longer remain in the wire path. Articles as long ago as 2003 warning of the improper use of THHN as a tracer wire have been written by engineers and regulatory agencies. Look at your current specification; tighten it up to not allow THHN.