**LV** and **HT** are terms commonly used in electrical engineering to refer to different voltage levels.
1. **LV (Low Voltage)**:
- Refers to electrical systems with a voltage level that is relatively low, typically under **1 kV (1000 volts)**.
- In most residential and light commercial applications, the voltage supply is low voltage (e.g., 120V or 230V).
- Examples: Household appliances, lighting, small motors.
2. **HT (High Tension)**:
- Refers to electrical systems with a **high voltage**, typically above **1 kV**.
- These are used in industrial, commercial, and power transmission applications.
- HT is used to transmit electricity over long distances because high voltage reduces the loss of energy during transmission.
- Examples: Power transmission lines, large motors, and industrial equipment.
In short:
- **LV** = Low voltage (less than 1 kV)
- **HT** = High tension (more than 1 kV)