The UMS plug is a 15A plug with no fuse in it. The reason why there is no fuse bcos it has direct wiring straight to the MCB (not combine a few circuits) like the 3-pin 13A circuits. If there is overcurrent, the protection is at the MCB (MCB will trip).

Normally this 15A socket is for high ampere equipment (water heater and AC)

And he also not plan to change the faceplate

If the decision have changed, than is my bad. I never really read through all unless I was following the thread from start.

thanks again for all your replies.

after i visited some shops and found all electrical appliances i might buy are using normal 13A plugs, i decided to change the wall socket.

now i'm just not sure can i DIY to change the wall socket as the wires inside might be different (i haven't open it and see)

Sorry to necro this thread, facing kinda similar problem.

I have an old magnetic starter (for old AC usage, but now AC not connected to it).

I'm planning to use a 4 gang extension cord, change the plug from 13A to 15A and then plug into that magnetic starter. My appliance should be using 13A fused plug, and I'll plug into that extension cord. So is this way safe?
Or better not to use anything other than AC for that magnetic starter?

This is not conventional, but there is no reason why you can't plug in a socket extension to the starter. (as long as all the wiring to the DB is sound and up to specs)

Except for this point:
A magnetic/Direct Online starter normally has a Thermal Overload Relay inside, which is supposed to trip just in case the air cond starts pulling more current than it is supposed to. This TOR may be set as low as 3.5 - 4 Amps, meaning your socket extension can only supply that much current.

I would suggest:
You just remove the DOL starter and put a 13/15A socket in its place. The DOL starter is already surface mounted, so a socket surface mounted in its place should look a little less conspicuous and a little less obtrusive.

This post has been edited by stormer.lyn: Jul 5 2022, 08:31 PM

Didn't know about the TOR. Thanks for the great explanation, now I understand more