Jenny wrote:
Hi I have a soil warming cable and thermostat that I used to have in a
sand box on a bench in my greenhouse. However it was very heavy and my
bench collapsed. So I thought I would update my bench and propagator and
use the soil warming cable to make a pad similar to this.


I did try using a sheet of expanded polystyrene but the cable is melting
into it plus I used cable clips and they keep coming out of the
polystyrene and I am worried it might catch fire.


I used a soil warming cable on a sheet of expanded polystyrene a few
years ago and found that the insulation had vanished from the cable.
Possibly the heat depolymerised the plastic and the styrene dissolved
the insulation. Care !

Paul

--
CTC Right to Ride Rep. for Richmond upon Thames