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Article R4226-2 of the French Labour Code

Electrical installations include all electrical equipment used for the production, conversion, distribution or use of electrical energy.

Electrical installations are classified as follows, according to the highest of the nominal voltages, existing either between any two of their conductors, or between one of them and Earth:

1° Very low voltage area (abbreviated as VLV): installations in which the voltage does not exceed 50 volts in alternating current or 120 volts in smooth direct current;

2° Low voltage area (abbreviated as LV): installations in which the voltage exceeds 50 volts but does not exceed 1,000 volts alternating current or exceeds 120 volts but does not exceed 1,500 volts direct current;

3° High voltage area A (abbreviated as HTA): installations in which the voltage exceeds 1,000 volts without exceeding 50,000 volts in alternating current, or exceeds 1,500 volts without exceeding 75,000 volts in smooth direct current;

4° High voltage B range (abbreviated HTB): installations in which the voltage exceeds 50,000 volts in alternating current or exceeds 75,000 volts in smooth direct current.

For currents other than smooth direct currents, the voltage values given in the preceding paragraphs correspond to rms values.

Original in French 🇫🇷
Article R4226-2
Les installations électriques comprennent l’ensemble des matériels électriques mis en œuvre pour la production, la conversion, la distribution ou l’utilisation de l’énergie électrique.


Les installations électriques sont classées, comme suit, en fonction de la plus grande des tensions nominales, existant soit entre deux quelconques de leurs conducteurs, soit entre l’un d’entre eux et la Terre :


1° Domaine très basse tension (par abréviation TBT) : installations dans lesquelles la tension ne dépasse pas 50 volts en courant alternatif ou 120 volts en courant continu lisse ;


2° Domaine basse tension (par abréviation BT) : installations dans lesquelles la tension excède 50 volts sans dépasser 1 000 volts en courant alternatif ou excède 120 volts sans dépasser 1 500 volts en courant continu lisse ;


3° Domaine haute tension A (par abréviation HTA) : installations dans lesquelles la tension excède 1 000 volts sans dépasser 50 000 volts en courant alternatif, ou excède 1 500 volts sans dépasser 75 000 volts en courant continu lisse ;


4° Domaine haute tension B (par abréviation HTB) : installations dans lesquelles la tension excède 50 000 volts en courant alternatif ou excède 75 000 volts en courant continu lisse.


Pour les courants autres que les courants continus lisses, les valeurs de tension figurant aux alinéas qui précèdent correspondent à des valeurs efficaces.

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