XVB 3G1.5 mm² Rigid Single-phase 0.6/1kV cable - Lightweight fixed installation

XVB 3G1.5 mm² Cable - Single-phase Rigid Cable for Lightweight Electrical Installations

XVB 3G1.5 mm² is a PVC-insulated, multi-conductor rigid electrical cable specially designed for low-voltage, single-phase, light fixed electrical installations. Its economical construction with 3 solid copper conductors (phase + neutral + earth) with a cross-section of 1.5 mm² makes it the cable of choice for lighting circuits, 10/16A sockets and small residential electrical equipment.

Compliant with the Belgian RGIE (Règlement Général sur les Installations Électriques) and European standards HD 604 and EN 50575, this cable guarantees safety, reliability and economy for your light electrical circuits.

Main applications

The XVB 3G1.5 mm² cable is perfectly suited to single-phase light electrical circuits:

• Residential lighting circuits: power supply for luminaires, recessed spotlights, wall lights, ceiling lights, LED lighting, etc.
• 10/16A sockets: Non-specialised socket circuits for light appliances (lamps, TV, computers, chargers)
• Auxiliary photovoltaic installations: Monitoring cabling, communication systems, supervision equipment (datalogger, smart meters)
• Control circuits: power supply for switches, push-buttons, presence detectors, etc.
• Light automation: electric gates, roller shutters, low-power home automation systems
• Indoor installation: surface-mounted on a wall, flush-mounted in a recess, in cable trays or technical ducts
• Protected outdoor installation: Installation in protective sheaths (ICTA, IRL) for outdoor feed-throughs
• Buried installation: Installation in sheaths, conduits or ducts buried in accordance with the RGIE (minimum depth 60 cm)

⚠️ Important: XVB 3G1.5 mm² cable is designed for light electrical circuits (lighting, 10/16A sockets). For specialised circuits with high power consumption (washing machines, dishwashers, ovens, hobs), use a minimum cross-section of 2.5 mm².

Detailed technical specifications

Advantages of XVB 3G1.5 cable for residential installations

Cost-effective solution for light circuits: The XVB 3G1.5 mm² cable offers the best value for money for low-consumption electrical circuits. Its 1.5 mm² cross-section is perfectly sized for lighting and 10/16 A sockets, offering substantial savings compared with oversized cross-sections.

Easy to install: With its compact 7-8 mm diameter and light weight (0.04 kg/m), this cable is particularly easy to handle during installation. It slips easily into small-diameter sheaths (ICTA Ø16mm), narrow cut-outs and false ceilings, reducing installation time and cost.

Versatile use: Although mainly intended for light circuits, XVB 3G1.5 mm² cable can carry up to 19.5A when laid underground, offering a comfortable safety margin for most common residential applications.

Reliable rigid construction: Rigid Class 1 solid copper conductors guarantee excellent mechanical strength for permanent fixed installations. The cable retains its shape after installation, preventing sagging in cable trays or horizontal ducts.

💡 Expert advice: XVB 3G1.5 mm² cable is protected by a 10A (recommended for lighting) or 16A maximum (for sockets) circuit breaker. Never use a circuit breaker of 20A or more with this cross-section, as the cable would not be properly protected against overloads.

Dimensioning and choice of cross-section according to the RGIE

The RGIE (Belgian General Regulations on Electrical Installations) imposes strict rules on cable sizing according to use:

RGIE sizing table for residential circuits :

Maximum recommended lengths to limit voltage drop:

• Lighting circuits (10A): Up to 40 metres
• 16A socket circuits: Up to 25 metres
• Beyond that: use a 2.5 mm² cross-section to limit the voltage drop.

To validate the sizing of your cables and calculate the precise voltage drop of your installation, consult our free calculator available in the Wattuneed toolbox.

Installation and use

The XVB 3G1.5 mm² cable must be carefully laid in accordance with good practice and the requirements of the RGIE :

Preparation and planning :

1. Identification of the circuit: Determine precisely the use of the circuit (lighting, sockets) to choose the appropriate protection.
2. Calculating lengths: Measure the route, allowing a 10-15% margin for connections in junction boxes.
3. Choice of installation method: Select the method of installation (surface-mounted, flush-mounted, duct-mounted) according to the constraints.
4. Selecting the protection: Use a suitable circuit breaker (10A for lighting, 16A for sockets).

Installation techniques:

• Exposed installation: Fix the cable every 25-30 cm with suitable plastic clamps. Avoid tight bends (minimum radius 45 mm).
• Flush-mounted installation: Make recesses 20-25 mm deep, pull the cable through without strain, fill in with plaster or mortar.
• Duct installation: Use minimum Ø16mm ICTA ducts (Ø20mm recommended for easier pulling). Pull the cable with a wire puller.
• Buried installation: Place the cable in a sheath at least 60 cm underground. Mark the passage with red warning netting 20 cm below the surface.

Connections and splicing :

1. Stripping: Use a wire stripper to remove the outer sheath, then strip 8-10 mm off each conductor.
2. Identification: Follow the colour code (Brown/Black=phase, Blue=neutral, Green-Yellow=ground)
3. Tightening: Use Wago connectors or terminals suitable for the 1.5 mm² cross-section. Tighten correctly without crushing the copper.
4. Junction boxes: Install junction boxes at junction points, never make connections in ducts or flush-mounted.
5. Checking: Check the continuity of each conductor and that there are no short circuits before switching on the power.

For detailed wiring diagrams and examples of complete installations, see our page dedicated to photovoltaic installation diagrams.

RGIE and Belgian standards compliance

The XVB 3G1.5 mm² cable complies with the requirements of the RGIE (Belgian General Regulations on Electrical Installations), which govern all electrical installations in Belgium.

Main conformities RGIE :

• ✓ Article 4.3.3: Insulated cables for fixed installations
• ✓ Article 4.4: Authorised installation methods (visible, embedded, buried in conduit)
• ✓ Article 5.2: Protection against indirect contact (presence of earth conductor)
• ✓ Book 1 - Minimum cross-section 1.5 mm² for 10/16A lighting circuits and sockets
• ✓ Annex 4: Calculation of conductor cross-sections and protection against overcurrents

European and Belgian standards :

• HD 604: Power distribution cables of rated voltage 0.6/1 kV
• NBN C 30-004: Specific Belgian standard for XVB installation cables
• EN 50575: Fire classification of electrical cables (Cca-s3,d2,a3)
• IEC 60332-1-2: Vertical flame spread test

If you have any questions about the conformity of your installation or would like advice on how to install it, please contact our technical support centre.

Applications in photovoltaic installations

Although XVB 3G1.5 mm² cable is not suitable for the main connection of a photovoltaic inverter, it can be used in a number of essential auxiliary applications:

Monitoring and supervision circuits :

• Powering smart meters
• Dataloggers and on-line monitoring systems
• Photovoltaic production displays
• Communication gateways (Wi-Fi, Ethernet, 4G)

Auxiliary circuits for the installation :

• Technical room lighting
• Power sockets for maintenance and tools
• Power supply for light cooling fans
• Alarm and security systems

Automation and home automation :

• Electrical load shedding controls
• Load management contactors
• Intelligent consumption control systems
• Automatic lighting of the inverter room

⚠️ Important reminder: XVB 3G1.5 mm² cable must NEVER be used for the main connection of a photovoltaic inverter. For this application, use at least XVB 3G2.5 mm² cable (inverters up to 3 kW) or higher cross-sections depending on power.

Comparison with other XVB cross-sections

To help you choose the right cross-section for your project, here is a comparison table:

How to choose

• Choose XVB 3G1.5 for lighting, 10/16A sockets, light auxiliary circuits, etc.
• Choose XVB 3G2.5 for specialist circuits (washing machine, single oven), inverters up to 3 kW
• Choose XVB 3G4 or 3G6 for large equipment and higher-power inverters

Why choose XVB 3G1.5 cable from Wattuneed?

• Sale by the metre: Order only the exact length you need, without wasting or overstocking
• Guaranteed quality: RGIE, HD 604, NBN C 30-004 and EN 50575 compliant cables
• Ultra-competitive price: €1.90 incl. VAT/metre - the most economical solution for light circuits
• Permanent stock: Immediate availability for dispatch within 24-48 working hours
• Free technical support: Our team of experts can advise you on choosing the right section for your installation
• Free resources: Access our online calculators, installation guides and detailed wiring diagrams

If you have any technical questions about sizing your cables, choosing the right cross-section in accordance with the RGIE, or ensuring that your installation is compliant, contact our technical support centre or use our free calculation tools.