lxsw20:keewee01: I had a sparky tell me that you should only ever plug oil fin heaters into the wall (directly). Never into a power board/strip due to the fact that they draw so much current. If plugging them into a power board/strip you are asking for trouble, especially will the cheap and nasty varieties.
Yeah we had a pretty major office fire down here a few years a go due to oil heater in a cheap multi board, be nice if they would alter the plugs or something so they don't physically fit high amp devices.
They are not high current, they are 10 amp plugs.
I would love it if 15 amp or even better 20 amp outlets would become the norm. Apparantly you cant just swap them all out for them according to my sparky.
But no, a heater is not a large load, it is only 10 amps, which is what the multiboard is rated for. If they are melting and catching fire then perhaps something should be done about the stellerly crap quality of them. What do you expect for under a dollar a socket.
They shouldnt burn anyway, if they do they have used the wrong plastic in them. Wouldnt suprise me for the generic junk from the dollar shops, but the ones from legit brands should have the appropriate flame retardents in them. If there is any flames in them it should conduct enough between phase and earth to cause the RCD to trip.
Sounds like for it to get on fire it was one made out of unsuitable plastics, so therefore wouldnt get any approvals, and hooked up with no circuit protection. Hardly the heaters fault.
Also the quality of sockets on powerstrips is crap - just a stamped piece of brass running along all the socket holes, it gets twisted and distorted from plugs being removed at an angle and then makes poor contact with the next plug. Gone are the days of good ones with sliding contacts and some decent design put into them.