Choosing the right electrical distribution board is a fundamental decision for every investor building a house with an area of 100 m². At Onninen, as a market leader in installation, we know that a properly selected distribution board for a home is the heart of the entire electrical installation, ensuring the safety and comfort of the residents. From our many years of experience, we know that a house with an area of 100 m² requires a thoughtful approach to selecting the distribution board, taking into account the number of circuits, the method of installation, and future needs.
We offer a wide range of electrical distribution boards of the highest quality in our assortment, which will work well in any single-family home. Our branches throughout Poland provide access to products from verified manufacturers and comprehensive technical support in selecting the optimal solution.
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How many modules are needed in a distribution board for a 100 m² house?
A house with an area of 100 m² requires a distribution board with a capacity of 36-48 modules, which provides the appropriate number of protections for all circuits. In our installation practice, we see that a standard house of this size needs a minimum of 10-14 circuits, which translates into specific requirements for the distribution board.
Standard division of circuits in a 100 m² house
| Circuit type | Number of circuits | Protection |
|---|---|---|
| Lighting | 2-3 circuits | B10A (1-module) |
| General sockets | 3-4 circuits | B16A (1-module) |
| Kitchen sockets | 2 circuits | B20A (1-module) |
| Special devices | 3-4 circuits | B16A-C25A (1-3 modules) |
| RCD switches | 2-3 pieces | 2-4 modules each |
From the experience of our experts, it follows that a 36-module distribution board is the minimum for a 100 m² house, but we recommend choosing a 48-module distribution board, which provides a reserve for future system expansion. In Onninen's assortment, you will find distribution boards and enclosures in various module configurations, tailored to every need.
Additional elements affecting the number of modules
- Surge protector – takes up 2-4 modules, protects the installation from damage
- Main disconnect – 3-4 modules, allows for cutting off the entire installation
- Internal meter – 6-8 modules, for monitoring energy consumption
- Home automation elements – 1-2 modules each, controllers and relays
Flush-mounted or surface-mounted – which distribution board for a 100 m² house?
The choice between a flush-mounted and surface-mounted distribution board depends primarily on the installation location and aesthetic priorities. As experienced providers of installation solutions, we recommend specific solutions depending on the situation.
Flush-mounted distribution board – advantages and applications
A flush-mounted distribution board is the ideal solution when aesthetics are of key importance. It is mounted in the wall, so it practically does not protrude beyond its surface. In our offer, you will find models with varying capacities, from 24 to 72 modules, which work perfectly in representative rooms.
- Excellent aesthetics – the distribution board is practically invisible
- Space-saving – does not take up space in the room
- Possibility of color matching to the interior decor
- Ideal choice for halls, corridors, and living spaces
Surface-mounted distribution board – practicality and functionality
Surface-mounted distribution boards are mounted directly on the wall surface, which significantly facilitates installation and subsequent expansion. Our specialists often recommend them for technical rooms, garages, or boiler rooms.
- Ease of installation on any type of wall
- Possibility of quick expansion and modification
- Excellent access to all elements
- Wide selection of sizes and configurations
We also offer hermetic distribution boards with an increased degree of protection IP, which work well in harsh operating conditions. All products in our assortment come from verified manufacturers and have the appropriate safety certificates.
Where to place the distribution board in a 100 m² house?
The location of the distribution board is a key decision affecting safety and ease of use. From our experience as a market leader in installation, we know which places work best in houses with an area of 100 m².
Optimal locations for the distribution board
- Hall or entrance hall – easy access, central location
- Technical room – ideal for surface-mounted distribution boards
- Corridor – discreet location while maintaining accessibility
- Garage – when it is an integral part of the house
Technical requirements for the location
The distribution board must be installed in a dry place, with a temperature range of -5°C to +40°C. The installation height should be between 1.1-1.85 m from the floor, ensuring comfortable access without the need for ladders or footstools.
There should be a minimum of 120 cm of free space in front of the distribution board, allowing for safe servicing. We recommend leaving at least 30 cm of free 
space beside the distribution board.
Equipment of the distribution board for a 100 m² house
A professionally equipped distribution board guarantees safety and comfort of use. At Onninen, we offer comprehensive solutions that ensure proper protection for installations and users.
- Basic elements of a home distribution board
- Main disconnect – allows for cutting off the entire installation from voltage
- Overcurrent switches (automatics) – protect individual circuits
- Residual current devices (RCD) – protect against electric shock
- Surge protector – protects against atmospheric surges
- Connection rails – facilitate connections between elements
Additional elements enhancing comfort
Modern installations in 100 m² houses often require additional functions. We recommend considering the use of:
- Energy meters for individual circuits
- Timers for managing lighting
- Priority relays protecting against overload
- Smart home system elements
All the mentioned elements are available in our branches along with professional technical advice from our specialists.
Frequently Asked Questions
1. How many modules should a distribution board for a 100 m² house have?
A 100 m² house requires a distribution board with a capacity of 36-48 modules. Smaller houses can function with a 36-module distribution board, but we recommend choosing a 48-module model, which will provide a reserve for future expansion of the installation and additional devices.
2. Can a flush-mounted distribution board be installed in any wall?
A flush-mounted distribution board requires a wall of appropriate thickness, at least 12-15 cm. In partition walls made of drywall, it is necessary to use special models adapted to this type of construction. We always check technical possibilities before choosing the type of installation.
3. How many electrical circuits are needed in a 100 m² house?
A 100 m² house requires a minimum of 10-14 electrical circuits. This includes 2-3 lighting circuits, 3-4 general-purpose socket circuits, 2 kitchen circuits, and 3-4 circuits for special devices such as a washing machine, dishwasher, or heating boiler.
4. Where is the best place to locate the distribution board in the house?
The optimal location is the hallway, entrance hall, or corridor on the ground floor. The place must be dry, easily accessible, and provide a minimum of 120 cm of free space in front of the distribution board. We avoid damp rooms such as bathrooms or laundries.
5. Is a surge protector necessary in a home distribution board?
A surge protector is highly recommended in every home distribution board. It protects the installation and electrical devices from the effects of atmospheric and network surges. It takes up 2-4 modules and significantly increases operational safety.
6. What is the difference between an RCD and an overcurrent switch?
An RCD protects against electric shock, while an overcurrent switch protects against overloads. An RCD detects current leaks to the ground and protects people, while automatics protect wires and devices from the effects of short circuits and overloads. Both types of protection are essential.
7. Can I choose and install the distribution board myself?
The selection of the distribution board can be done independently, but installation requires SEP qualifications. Designing and installing distribution boards must be carried out by a qualified electrician with the appropriate qualifications. We offer technical support in choosing the right model.
Investment in safety and comfort
Choosing the right distribution board for a 100 m² house is an investment in the safety of the entire family and the comfort of everyday use. At Onninen, as a market leader in installation, we provide access to the highest quality distribution boards from renowned manufacturers, comprehensive technical advice, and support at every stage of project implementation.
Our specialists will help you select the optimal electrical distribution board for specific needs, taking into account the size of the house, the number of circuits, and plans for future expansion. From our experience, a properly selected and professionally installed distribution board serves without problems for many years, ensuring residents full safety and comfort in using the electrical installation.
We invite you to contact our branches throughout Poland – together we will find a solution that meets all expectations regarding the functionality, safety, and aesthetics of the distribution board in your home.