The purpose of the ramp heating system is to prevent impeded access to buildings, car parks etc. due to snow and icy conditions.
The snow and ice melting system shall be of the self regulating type designed specifically for this application and approved to European standard VDE (CE approved), as manufactured by nVent and known as Viagard EM2-XR.
The self regulating Viagard heating cable shall be constructed with a heavy braid and thick, pressure extruded, modified polyolefin jacket to provide maximum resistance to installation damage. The cable shall be capable of withstanding a crushing force of 8900N and a cut through force of 100N/0.25mm blade.
The heating cable must be capable of demonstrating a life expectancy in excess of 25 years.
To give snow/ice protection under typical UK winter conditions the spacing and cover shall be as follows:
Cable Services web link: nVent VIAGARD Commercial Electric Trace Heating
Data Sheet PDF: VIAGARD Specification Guide
Data Sheet PDF: VIAGARD Data Sheet
Cable Services Catalogue PDF: VIAGARD Trace Heating Product