The disorder results from overproduction of collagen, a naturally occurring protein found in the skin. It is unknown what causes this overproduction of collagen to occur but the immune system is believed to play a significant role. Morphea is not contagious or passed down in families.
A typical US household voltage is 120/240 V, 60 hz, single phase. There is a tolerance and the actual measured voltage is rarely exactly 120 volts. A common reading at my house is 117 volts. Industrial motors are made and rated in multiples of 115V (115, 230, 460, and 550Vac) for use on line voltages in multiples of 120 V (120, 240, 480, and 600 Vac).
How much electricity does a home use? Household electricity use in the UK dropped under 4,000kWh for the first time in decades in 2014. At an average of 3,940kWh per home, this was about 20% higher than the global average for electrified homes of 3,370kWh. Average electricity use per household (kWH/hh)