1 Answer
A step-down transformer in residential wiring is used to reduce the voltage from a higher level (typically the voltage supplied by the utility company) to a lower, safer level for use in homes.
In most countries, electricity is supplied to homes at a high voltage (e.g., 11,000 V or 33,000 V) to allow it to travel long distances efficiently with less energy loss. However, this high voltage is dangerous and unsuitable for use in home appliances and lighting. A step-down transformer lowers the voltage to a much safer level, typically around 120 V or 230 V (depending on the country) before it enters homes.
Here’s how it works:
So, in simple terms, a step-down transformer ensures that the electricity you receive is safe to use in everyday appliances like lights, refrigerators, and phones.
In most countries, electricity is supplied to homes at a high voltage (e.g., 11,000 V or 33,000 V) to allow it to travel long distances efficiently with less energy loss. However, this high voltage is dangerous and unsuitable for use in home appliances and lighting. A step-down transformer lowers the voltage to a much safer level, typically around 120 V or 230 V (depending on the country) before it enters homes.
Here’s how it works:
- Primary coil (input side): The high voltage is applied here from the utility lines.
- Secondary coil (output side): The voltage is reduced in the secondary coil, delivering a lower, usable voltage for the home.
So, in simple terms, a step-down transformer ensures that the electricity you receive is safe to use in everyday appliances like lights, refrigerators, and phones.