The professional requirements for electrical work are determined by the Finnish Electrical Safety Act. All work related to the main switchboard, new sockets, and fixed equipment requires an authorized electrician. Grounding work and the installation of lighting systems are also tasks that require an electrician. DIY electrical work can cause life-threatening situations and fires.
What electrical work is prohibited by law for ordinary consumers?
The Electrical Safety Act and Decree prohibit consumers from performing any work related to fixed electrical installations. The Electrical Work Act stipulates that only authorized electricians may perform work related to a building's electrical network or main distribution board.
Work prohibited by law includes, among other things:
- Internal work on the main switchboard and replacement of fuses in automatic fuses
- Installation of new sockets and switches
- Pulling electrical cables inside walls
- Installation of fixed luminaires on the ceiling or wall
- Grounding work and installation of equipotential bonding conductors
The purpose of these regulations is to protect both residents and the electrical network from damage. Professionals have the necessary training and tools to work safely with electricity. Unauthorized electrical work may also invalidate insurance coverage in the event of damage.
When does electrical work become life-threatening without a professional?
Electrical work becomes life-threatening as soon as you start working with live parts without the proper expertise. Safety in electrical work requires detailed knowledge of voltages, grounding, and protective devices.
The most serious risks arise in the following situations:
- Working with the main center without power interruption
- Electrical work in damp locations without knowledge of IP classifications
- Modifying or removing the grounding system
- Incorrect connection of aluminum and copper conductors
- Using a conductor that is too small for a large load
An electric shock can cause cardiac arrest at a current of just 30 milliamperes. Incorrectly made connections overheat and can cause a fire. Dangerous electrical work can also damage the power grid and cause widespread power outages in the neighborhood.
What are the most common electrical jobs that always require a professional?
The most common electrical installations in households carried out by professionals relate to fixed installations and the main distribution board. These jobs require special expertise and official permits.
The most common tasks performed by professionals:
- Main tasks: Adding groups, replacing residual current devices, and modifying the meter center
- New sockets: Installation and wiring of flush-mounted sockets
- Lighting systems: Fixed installation of ceiling lights and installation of dimmers
- Fixed equipment: Connection of cooker hoods, electric radiators, and underfloor heating
- Grounding work: Potential equalization and installation of protective grounding
These jobs require an electrical safety card and authorization. Electrician services also include the necessary inspections and documentation required by official regulations.
How can you tell when you need to call a professional immediately for an electrical problem?
Immediate professional assistance is required when signs of electrical safety hazards appear. Electrical safety requires a quick response to warning signs.
Signs of an emergency:
- Repeated tripping of the residual current device without any apparent reason
- Smell of burnt electricity from sockets or switches
- Sparks and crackling in electrical equipment
- Overheating sockets or electrical cables
- Electric shock when touching devices or switches
In these situations, immediately turn off the power at the main switch and contact an electrician on call. Delaying can lead to a fire or serious electrical accident. A professional can quickly determine the cause of the fault and repair it safely.
Electrical work always requires expertise and official approval. It is safest to rely on a professional for all work related to fixed electrical installations. Properly performed electrical work protects your home and its occupants for decades. In emergencies, quick consultation with a professional can prevent serious damage and dangerous situations.
