What are the Standards for an Electrical Panel?

The electrical panel, also called the protection panel, is a kind of box which houses all the electrical circuits in your house, ensures their distribution and their optimal functioning.

Indispensable for any domestic electrical installation, this device is governed by the NFC 15-100 standard which imposes strict obligations and requirements concerning its installation and composition.

Are you planning to install an electrical panel in your home very soon? Here is the basics of what you need to know about the standards in force for electrical panels.

The standards to be respected for an electrical panel


The regulatory requirements concerning the electrical panel are defined by the NFC 15-100 standard relating to the protection of electrical installations and people for low voltage installations in France. According to this standard, the switchboard must be installed in an ETEL housed in the GTL of your accommodation. But many other rigorous obligations and recommendations must be observed.

Installation in an ETEL and a GTL

The electrical panel cannot be installed anywhere in your building. In accordance with the NFC 15-100 standard, the electrical panel box must be installed in a housing electrical technical space (ETEL) specially designed to accommodate it.

This ETEL is itself inside the technical duct of your accommodation (GTL). They must both meet certain characteristics in terms of dimensions. The regulations recommend that the GTL must be at least 600 mm wide and 250 mm deep.

The GTL can be set up inside your accommodation or an annex. In all cases, the electrical panel must be easy to access and protected from any humidity. It must be placed at a height of between 1 and 1.8 m.

The other requirements to be met for the installation of an electrical panel

Beyond the requirements relating to GTL and ETEL, the standard provides several other rigorous requirements for the installation of the electrical panel as well as the equipment it must include.

So to comply with standards and be able to be connected to the public network, your electrical panel must include an emergency cut-off device for the safety of users. It must also provide at least 20% of free space in anticipation of a possible evolution of your habitat and the addition of new circuits.

Among the other elements that your electrical panel must include are:

  • Tilting and extendable rails for easy wiring
  • A 30 mA type A differential circuit breaker and a second type AC
  • 8 circuit breakers for each RCD
  • One circuit breaker or branch circuit breaker for each circuit
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