Cable Wrap Labels for PAT Testing. Some appliances prove to be difficult to be fitted with a standard pat label. Cable wrap labels will wrap around any extension lead, IEC lead or cable and fix back onto itself. Our cable wrap labels are printed onto a tough, non-rip, matt polypropylene. They are extremely hard wearing and can easily be written on with a ball point pen. Alternatively we can overprint your details on most of our labels to save you time and effort!