FROST PROTECTION FOR WATER SUPPLY AND SEWER SYSTEMS
There are many examples of trouble due to frozen water supply and sewer systems. In addition to the inconvenience caused by out-of-order water and discharge pipes, there may be material damages as well that is very expensive and difficult to repair.
An easy method to guard against such problems is to provide frost protection by installing heating cables inside or outside the pipes.
For pipes up to 50mm a good rule of thumb is that an output of 10 W/m is enough if the pipe lies in the ground or is otherwise covered (A thin insulation is sufficient).
Please note! A heating cable with an output greater than 12 W/m must not be laid directly against a plastic pipe as this may cause heat damages to the pipe.