Can I extend the cold leads (cables) on my mats? 

Yes. The cold leads (Live & Neutral) on each mat consist of double insulated wire manufactured to withstand temperatures between –40c to +105c. There are five metres of cold leads on each mat and this is sufficient for the majority of installations. On the rare occasion where a longer length is required you can use the excess cable from the other mats (connect this by using a 2.5mm crimp sleeve and shrink tube) or you can order additional cable from Accolade.