Any and all constructive/sarcastic comments welcome...

For starters the 63A RCCB device doesn't look like it's wired up properly. Hard to tell from the picture angles.

If you are talking about the different colored wires coming off the bottom of the circuit breakers this seems to be a standard practice in Thailand. I guess the different colors helps the builders/installers kept straight which wires run to which room in the residence. Or maybe they just like a colorful circuit breaker box. I also see in the second picture (the only one I opened) you have one black wire coming from somewhere not hooked up to a circuit breaker....the wire is just kinda hanging there with its bare wire exposed.

Summary: everything looks like it fully complies with Thai Electrical Standards.

poor definition ..underexposed??

I see three bare ended wires that should be insulated if not in use, apart from that and the generally messy appearance it looks OK.

Does something not work?

exposed live on breaker 7/8 (hard to tell from the pic)

Is that earth bar blacken from something shorting - again hard to tell from the pic

Cables not run through the punch out holes in the box

Add some pasta sauce and cheese to complete

Appears like you have more circuits than connections to the neutral bus, not counting the RCCB, should be a 1:1 ratio.

Can't close the door !!...

Thanks to all that replied. This MDB is in my neighbors new house and the same electrician did a much cleaner, simpler installation at my house a few years ago and I recommended him to my neighbor (both homes have similar electric loads). Amongst other issues, I don't understand why he put in so many MCB's. A few lights, fans, fridge and socket plugs are on the unprotected circuits for use if the RCCB trips but <deleted> is the 40 A circuit composed of? I'm going to the house tonight and the sparky says he'll explain everything

Dag--door closes OK

Int Obs--that's the 1st thing I noticed yesterday The RCCB has been tested and (somehow) works correctly

Hssl--the sparky says he's putting another 20A breaker there. That makes about 200 breaker amps after the RCCB

Crossy--those are spare wires that will be insulated/isolated. Do you think the breakers are overkill? The (total) amp requirement is 120 and no more than ~40A will ever be used. And yes, everything works. Just don't know how safely and efficiently

Pib--yeah, it's quite colorful. Thai Electrical Standards? Are you winding me up or what

I'll let you guys know what happens tonight after the sparky explains everything

They earthed it? Don't see that much.