I had a 4 way plugstrip I can't remember the make but it was a good one none of your cheap rubbish even that overheated when I had a 2 kilowatts heater and a couple of small electronics items plugged into it yet it said clearly max load 13 amps at 250 volts the load I had on it was no more than 10 amps. I now never use these for anything other than small items 2 or 3 amps max any heating loads get plugged into there own outlet