Labelling guidelines taken from DTI/Pub URN 06/1972.

Labelling and Identification are very important and all labels should be in the correct location, clear and easily readable. The labels must be suitably affixed and durable.

Labelling should be provided at the service termination, meter position and all points of isolation to indicate the presence of on-site generation and indicating the position of the main AC isolator.

This website supplies the appropriate warning labelling required to indicate the presence of two electricity supplies.

• All labels must be clear, easily visible, constructed and affixed to last and remain legible for the lifetime of the system.
• At any points of grid interconnection (i.e. the distribution board or consumer unit) the following information should be displayed:
• Circuit diagram showing the relationship between the inverter equipment and supply
• Summary of the protection settings incorporated within the equipment
• Contact telephone number for the supplier/installer/service operator for the equipment

The labelling requirements above are part of G83/1. other labelling of parts, e.g. AC and DC isolators, DC junction boxes, DC cables and MCBs is good practice.

Dual supply labelling should be provided at the service termination, meter position and all points of isolation to indicate the presence of on-site generation and indicating the position of the main a.c. switch disconnector. We supply a suitable dual supply warning label.