I have made a Propagating Box for my Pelargonium cuttings. The bottom heat is provided by 2 x 11 Watt bulbs. I need to control the heat at 21 degrees 'C' so I plan to use a rod type Thermostat that will fit just below the tray holding the cuttings. It is a ' BACKER BACKERSAFE STANDARD THERMOSTAT ROD STAT 7" ' which I believe is for controlling the heat in domestic hot water boilers. Will this be OK?
In a word, no. This is an immersion heater thermostat, and will not control at such a low temperature. Probably the lowest it would go to would be 40 degrees. I have to say that I'm a little concerned with the electrical safety of this project. Components like this thermostat are designed to be in a fully enclosed appliance housing, and would only be considered safe if used as intended.
Many thanks for your so quick reply! I chose this Thermostat because the control range is 15 to 65 degrees 'C' However, I will heed your advice and see what else I can get. If you have any ideas I would be most grateful. The box will be used in the house and will NOT be in any contact with water. Once again, many thanks.
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