Answer :
Final answer:
The acceptable voltage range for a 208-volt system is generally from 187.2 to 228.8 volts, following a typical ±5% to ±10% tolerance standard. Power systems use transformers to step up and step down voltages for transmission efficiency and safety.
Explanation:
The acceptable voltage ranges for 208 volts typically adhere to industry standards that specify a tolerance level for voltage variations in electrical systems. In most situations, utilities are expected to maintain the voltage within ±5% to ±10% of the nominal values. For a 208-volt system, this would translate to an acceptable range from approximately 187.2 volts (–20%) to 228.8 volts (+10%). Equipment connected to this voltage should be designed to operate effectively within this range. However, for precise standards and regulations, you would need to refer to local utility guidelines or national codes such as the National Electrical Code (NEC) in the United States.
When discussing power distribution systems, voltage transformation and transmission are key concepts. Power is generated at high voltages, often greater than 10 kV, and then transmitted at even higher voltages, sometimes up to 700 kV, to minimize energy losses over long distances. Subsequently, this voltage is stepped down through transformers at substations to intermediate levels, such as 5 to 13 kV, for local distribution. Eventually, it is reduced further to voltages like 120, 240, or 480 V for safe use at the individual consumer level.
