3kw is quite powerful for a fan heater.
Plug on fan heater gets hot.
If an overheated plug is near flammable materials such as curtains wood furniture or paper then the plug can ignite those materials starting a fire.
How long have you had the fan heater.
Corrosion arcing or dirt in the connection will cause resistance which will in turn cause heat.
The black paint on the grill may be wearing off over time due to heat.
Ok that might be a little much.
If the cord plug gets hot at the plug strip problem is the plug cord.
Since it s still winter time let s start with one dealing with using a space heater.
It is a fire risk and should not be used.
Many of the smaller ones are 2 5kw or less.
I should blame the campground then open the box and hose it down to cool it off.
Try replacing plug socket and the fuse in the plug with a good brand.
However just plugging it into a plug strip will not help and because of the longer cord will waste more electricity in cord heating and you will get even less heat out of the portable heater.
If you are overly concerned contact delonghi.
If i plug one in the heater s plug gets hot.
Similarly overheated plugs can damage the insulating material around the plug s prongs or electrical cord wires.
Immersion heaters are wired in because they operate for hours at a time a fan heater should cycle on and off with its thermostat.
The third pin is for an earth connection and if the fan heater is plastic it will not require an earth.
A plug that is hot to the touch may pose fire and electrical shock hazards.
Using a amp clamp to read amps.
Check plug wires circuit breakers and outlet for security and function.
The plug should not get hot or even more than barely warm even with sustained periods of use.
Portable heater plug gets hot.