15 Amp Light Duty Single Phase Industrial Extension Leads 

These light duty extension leads are recommended for indoor use or for outdoor applications where the ambient temperature is below 40°C.
For extended use outdoors or in environments with high ambient temperatures use the Heavy extension leads.
(Intermittent use: Ambient temperature above 40°C below 45°C)

The maximum length for general use: 25m

The maximum length for use with any equipment that has a high starting current: 15m