@Phaedrux I don't have anything connected to the Z axis drivers currently

@mrehorstdmd Alright, I just tried out that website, it suggested it will take about 40 minutes to get to 110 Degrees C. which is strange as I have taken this heater from an old panel I had that heated my garage, it is able to hit 100 Degrees which is its maximum within 3-4 minutes on the same sheet of Aluminium that I will be using for my heated bed. I have a insulation foam layer under the heater also that retains a lot of the heat so requires less power to sustain the temperature.

@jmjcoke Thanks i'll look into those!

It is a Temp fuse.

I am considering getting a Duet3D board for my new 3D Printer build as I am wanting to create a 600mm x 600mm build area that is going to be just over 1 meter in height. I already have a old heater that is 240v and 300w, obviously I can not just plug this thing straight into the Duet3D but using its current setup I would have no way to control the heat levels. It has a 100 degrees C thermistor that cuts out if it goes above 100 degrees C, I was thinking I could possibly use it to control the heat out put but think there must be a better way to do it. Any ideas that might help would be great.