1.5mm for lights.
2.5mm for power sockets.
4mm for water heater, air-conditioning or oven. Some water heaters must be connected straight to the MCB. No power socket, plug or switch in between.

In my house all the lighting points have 2 wires connected as one. What’s the reason behind this? Why didn’t the developer just use a higher gauge wire?

It is called looping and is meant to save cost.

For high-end bungalows, I have seen the owner opting for 1 MCD = 1 point. Meaning, if the house has 50 lights, that would be 50 MCBs! Expensive but some people are just willing to spend on safety.

Anyone have ideas on how to tidy up this unifi fibre cable? See image

The cable is quite tough itself.

You mean if one room has 4 lights, then there are 4 switches, one for each light? Sounds implausible that there are no looped light points at all.

In my house all the lighting points have 2 wires connected as one. What’s the reason behind this? Why didn’t the developer just use a higher gauge wire?

Its possible, just that its not cheap.... 4 MCB to each light all direct (no loop) to either 4 individual switch or to look neat to a single 4 gang switch.
Just that you have 4 MCB instead. Also each light need direct link to it in DB Box which mean more wiring needed. If DB box just outside the room then ok.. shorter run.. if bungalow where the DB Box is downstairs and the room upstairs think the length of the wires needed.

Think electrician remark on this will be "overkill"....

Anyone have ideas on how to tidy up this unifi fibre cable? See image

The cable is quite tough itself.

In my house all the lighting points have 2 wires connected as one. What’s the reason behind this? Why didn’t the developer just use a higher gauge wire?

I agree it is possible, just implausible for lighting
If the poster had said the 13 A sockets were individual MCBs would be plausible, because I've done it for a small car workshop. They wanted each socket to be able to use high current tools/welding.
But individual lighting circuits?

Hahahaha, yeah... just that seldom have people will ask for this.. as this will be a specialty request.

Seen such arrangement before.. direct 5 "lighting" point to a room .. A Man Cave. An individual DB outside... everything direct... 7 units 13A powerpoint... to all corners plus Air Cond points. Whole DB Full already.

Room also custom built ... Man Cave.. for the owner hobby.... The content of the room is as expensive as a bangalow.

Anyone have ideas on how to tidy up this unifi fibre cable? See image

The cable is quite tough itself.

this seems like outdoor fibre cable and yes is quite tough, it may has a kind of steel string attach together
usually reach our house FWS only, and then white indoor fibre which is easier to tidy up

but recent years, seems no longer provide FWS

Actually, my price was back in May 2021. The problem I face is the location. The moment they know the address, they have many reasons to raise the price.

Recently, I joined a facebook group (mainly for Mandarin users) and got a few electricians to quote me. The price per light point is only RM 65 - 75 per point and the 13A is only RM 100 per point for the current market price.

I am going to share the quality of the "Data Centre" electrician. He claimed that he has done several data centres. Contract signed is Cat6 wire. Get the foreign labour to lay Cat5e unbranded wire.

These are the quality of the "Data Centre" electrician, not mentioned the light, aircond and fan switches of my living room are put at car porch:

If you have ceiling in that room, then you can still do jointing on the pendant light point and use flexible to shift its location. else. then surface conduit, which will be ugly.
Pendant light point is placed next to the fan.


You have to ask him to give you CAT6, cos you paid for it. Doesnt matter if you dont need cat6 for cctv. You paid for it. Unless he gives you negative VO for the difference of cost.
Cat5e was used despite the contract and pricing is Cat6. Argument is I don't need Cat6 for CCTV. But, price is the same.


Lighting normally has no earthing, so it’s ok.
Because I said I will use LED light, no Earth line for the points.



Best not to run conduits in the screed or under tiles. Best to have top down approach. But since your slab already cast, why not run the points in the ceiling and hack the wall? unless no ceiling. Yes you can still do waterproofing. but it has to be below the conduits. meaning you still hav to lift the conduits to apply waterproofing, and once dry, then reinstall the conduits. so might as well run high level in the ceiling, and do new routes in the wall.
My requirement is concealed and this picture shows my bathroom. The network and 13A cables were put like this. Below the sinks. If he forgot to place the PVC conduit during casting of slab, he can hack. But, the electrician refused unless I paid VO price. Like this, can I do water proofing?


If it was a 4 way junction box that was cut to become a T, then he should just replace. If its a T junction box, and nothing was damaged, maybe he just put the paper there to provide friction against the nail. During casting there could be alot of vibration and that box could move. But who knows, need to be there to inspect the slab prior to casting.
For a 60 sen joint that was broken - would you replace a new one or tore a piece of paper and cover the hole?

Lighting normally has no earthing, so it’s ok.

All points are required to have an Earth. Whether it is used, or not, for the light fitting is not for the electrician to decide.

That's why I said normally. For lighting there are typically no terminals to connect earth to. So it's unused at the fitting end.