BS EN 50107-3:2018 Product standard covering luminous signs with discharge lamps and/or LED (light emitting diodes) and/or EL (electroluminescent) lightsources with a nominal voltage not exceeding 1000 V, with the exclusion of general lighting, traffic- or emergency related purpose

Electrical safety
Installation
Performance testing
Lighting systems
Electrical components
Signs
Electrical equipment
Earth-leakage circuit-breakers
Advertising signs
Sign lighting (buildings)
Electric wires
Rated voltage
Electrical installations
Electrically-operated devices
Electrical testing
Discharge lamps
Decorative lighting
Voltage
Electrical protection equipment

Link: BS EN 50107-3:2018 Product standard covering luminous signs with discharge lamps and/or LED (light emitting diodes) and/or EL (electroluminescent) lightsources with a nominal voltage not exceeding 1000 V, with the exclusion of general lighting, traffic- or emergency related purpose
Source: BSI Standards