My south facing greenhouse is a lean-to up against the house wall. We
put electricity in for lighting and an electric thermostatically
controlled heater. The wires are run through that yellow plastic
ducting and have been in place now for about 5 years.

Unfortunately there was a problem with the wires when had that really
cold weather recently..........
Of course I did not notice that the heater had not been on until
several plants were well and truly frosted :~((

I have a few questions in connection with this:

1) There had obviously been a short circuit and when we investigated
saw that the wires were sort of dried out (if that makes sense) and
frizzled at the ends. Could this be due to the really hot
temperatures in the GH during the summer months ?? If so what should
we do to stop a repeat of the problem ?? (I do use shading but it
still gets HOT)

2) Is there special wire one should use?

3) or special insulation ?

4) Will the fuchsia's be OK ?? The few leaves that were still on the
plants are limp and frosted, but the stems show green when scraped.

Jenny