Pienjännitys

Pienjännitys refers to low-voltage electrical systems. In Finland, this typically means electrical installations operating at nominal voltages up to 1000 volts for alternating current (AC) and up to 1500 volts for direct current (DC). These systems are common in residential, commercial, and industrial buildings for power distribution, lighting, and operating most everyday appliances.

The design, installation, and maintenance of pienjännitys systems are subject to strict regulations and standards to ensure safety and prevent electrical hazards such as electric shock, short circuits, and fires. Electricians working with these systems must possess specific qualifications and adhere to safety protocols.

Key components of pienjännitys include distribution boards, circuit breakers, fuses, wiring, outlets, and switches. The grounding (earthing) system is a critical safety feature to protect against faults. Regular inspections and testing are recommended to maintain the integrity and safety of pienjännitys installations. The term distinguishes these systems from high-voltage (suurjännitys) systems used for power transmission over long distances or for specific industrial applications.