Difference Between Transmission and Distribution lines – The Transmission and Distribution lines are both used to carry electricity from one place to another place. The difference between transmission lines and distribution lines is explained in terms of factors such as their basic usage, working supply phase, voltage level, and conduction level.
The Difference Between Transmission and Distribution lines is given below in tabular form.
| BASIS | TRANSMISSION LINES | DISTRIBUTION LINES |
| Usage | Transmission Lines transmit electricity from power plants to substations. | The Distribution lines carry electricity from the substation to the consumer end. |
| Phase | Transmission Lines are carried out in a three-phase supply system. | Distribution lines require a single-phase power supply system. |
| Voltage level | Transmission Lines carry electricity at a very high voltage—about 11000 volts. | Distribution lines carry electricity at a very low and safe level of about 220 volts. |
| Current conduction level | Transmission Lines conduct current at 69 kV or more. | Distribution lines conduct less than 69 kV. |
| Thickness | Transmission lines are thick lines. | Transmission Lines conduct current at 69 kV or more. |
Generating electricity is only one part of the process; transmitting it from power stations to substations and then delivering it to consumers is equally important. This entire flow of power takes place through transmission lines and distribution lines.
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Transmission lines are high-voltage lines that carry electricity from the power plant to a substation, from where it is supplied to different regions for various needs. Distribution lines are low-voltage lines that carry electricity from substations to end users for residential and commercial use.
The Difference Between Transmission and Distribution Line
- A transmission line carries electricity from a power plant or power station to various substations, whereas a distribution line carries electricity from the substation to the consumer’s end, i.e., to residential and commercial users.
- A transmission line operates with a three-phase power supply, while a distribution system generally uses a single-phase supply to deliver electricity.
- Transmission lines carry electricity at very high voltage, typically around 11,000 volts, whereas distribution lines supply electricity at a much lower and safer voltage level of about 220 volts.
- A transmission line carries current at 69 kilovolts or above, while a distribution line carries current at less than 69 kilovolts.
- Distribution lines are thinner compared to transmission lines.
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