What is the cable core thickness?

The fuse box beside the electrical meter? Are you refering to this black thingy beside the meter in the photo?

PS: the pic was taken somewhere else on this forum, just use as reference

This post has been edited by S'aimer: Aug 18 2014, 10:48 AM


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Cable core thickness is the one from meter entering to your Main Fuse Box (inside your house)

The fuse box on the left I'm referring to. Inspect the fuse rating or is there really a fuse inside. Please seek a qualified electrician to do so. I strongly do not recommend house owner to check on these stuff as it can be lethal when you get electrocuted. The electrocution from this wires are more harmful and lead to death than the ones found inside your house premises.

I see.

The meter and fuse box are the old version that came with the house (a subsale) in its original condition.

The cable is that thick one above the meter?

Yes is indeed thick but somehow those cable pass-through seems is not as thick as the one supplied

Oh, I don't know then because after checking my photos, I think the cable that passes through has been concealed indoors.

If you are going to use single phase without upgrading, then just use the 40A ELCB.
No doubt the main cable from TNB can go upto 100-200A, but then for single phase to pull full 40A all the time are quite challenging part. If you can pull that, your bill will hit rm800-900 monthly.

It can be seen the moment you remove the cover of your Main Distribution Board aka your fuse box internal.

That's the benefit of having 3 Phase electrical. 3 phase reduce the burden load of a single phase electrical. There is chances the electrical bill won't be expensive than relying on single phase meter. But don't be surprised when 3 phase electrical having one or two phase malfunction due to TNB electrical fault. You'll notice when one of your room has no electrical supplies

Er bro, did I read that right? If I pull full 40A, the monthly bill will be RM800-900?

But I don't quite get the logic actually? I've seen my parents's electrical bill and it's less than that, probably around RM300-400monthly for single phase. This is with 4 air cons and 1 water heater.

Yup, 3 phase wiring done nothing good except you have load balancing(if the wireman do the job rightly), claiming insurance incase fire easier(as everything follow the rules)
But will using 3 phase makes our bill cheaper? I doubt so, since the meter are digital and no other independent party can verify that.
But used my company's FLIR camera to check, my incoming cable from TNB meter are "colder" compare to my neighbor(we have similar air cond setup, upstairs Panasonic and living hall 2HP air cond). I asked him to run on both the air cond at 8-9pm.

However, I see in here that 3 phase wiring should be considered if going to have more than 3 air cons.

And I was thinking whether I need to upgrade to 3 phase or not when I only have 1 water heater and 1 air con although the possibility of installing another water heater for shared bathroom and air cons for the other 2 common rooms will be high in future.

That's why you must know what does typical current draw means.
Under normal condition, all appliance won't pull max current all the time unless shorted.

Using water heater 24/7? No right? Then no need. You only need to consider 3 phase if you are using 3 air conds all the time.
But 3 phase wiring are quite expensive to do. The good thing is, your wire can last longer since they are not stressed.

I agree that all appliance doesn't pull max current all the time. But still concern about electrical load, bills and safety in the end. Ya 3 phase wiring is expensive, which is why I am still thinking about it for the moment.

Since I have install fans in the rooms and downstairs, I doubt will be using air con all the time except when my in laws come and stay over. They are kinda the type who sleep with air con every day.

3 phase or 1 phase has nothing to do with bill amount.
Electrical bill is about KWhr, nothing to do with phase.

1 phase with 3 aircond that using total 6KW
compared to
3 phase split into 3 aircond that using 2KW on each phase.

The total amount after 1 hour of usage, both will register 6KWhr.

Hi guys...

anyone of you have contact for contractor that does 3 phase wiring application with TNB? thanks..

around kl area...

Even using 3 aircond all the time also not necessary to get 3 Phase.
Unless you on them at the same time and all of the aircond is non converter type.

Yup, that's right.
Only some mad people will on every thing at the same time.

Anyway, every January I'm getting some refund, as far as I heard, it is the deposit I put in last time(rm800).

Ow? Got refund this kind of thing in TNB bill? 1st time hear ler

Yup, it is stated as "pelbagai"
If charge extra, I make noise, if get back money, keep quiet.

Haha, every one will do the same la.

Let's wait for another 4 months and see.
But you need to fullfill certain condition to get this, if not mistaken it will be prompt payment(now in order to get rm50 CB, every month will pay extra), use above certain limit(so in some sense you need to waste)