Hi Everyone,

Want to ask the DB at my house. As shown in the pic below does mean that my house is only powered with 32 amp?
I thought all single phase wiring comes with 63 amp?
If want to change from 32 amp to 63 amp will it cost a lot of money?
Thanks in advance.

http://www.flickr.com/photos/98767275@N03/...58417/lightbox/

http://www.flickr.com/photos/98767275@N03/...37542/lightbox/

http://www.flickr.com/photos/98767275@N03/...56955/lightbox/

That depends on what gauge your incoming supply cable is.

If your supply can support it, swapping it out isn't that big a deal. (Note : Do not try if you have no experience or qualifications with power systems)

Thank you for the the reply...
I plan to fit in 3 air cond, 2 fridge and 2 water heater at my house. 32 amp is enough?
My house is still under construction, I plan to ask the developer to change to 63A DB for me. If they dont want to change I plan to ask electrician to change it for me as I am going to reno my house and adding socket to my house. Do you know what is estimated to for each socket/switch?
Thanks...

You have two db box? Each 32amps two already 64amp

3 air con, 2 fridges and 2 water heaters definitely will tarpau your supply and set your house on fire if you happened to run all of them at the same time lol. I don't even need the AS3000 standard to tell me that.

Might I suggest going to 3 phase power instead? Split the phases and balance the load correctly.

Ya...One at ground flr and another at 1st flr.
But I think they split the 32A: 16A and 16A?
Sorry...I dont know anything about electric.

I got two storage heater 6 Ac and 1fridge. I don't see any problem. Need to know the max running current each and the concurrent running equipments.

2 heater and 3 Ac assume Ac is 1.5hp is about 10000watt additional fridge (depend the size) maybe 1500watt so total about 11500watt unless he got 2000w light if not is not an issue. Of course all this will be issue if owner switch on all the time and equipments running max load all the time.

Proper cabling is critical. In coming 63amps it will able handle 63 for short period of time. Most important the cable need to handle the load.

This post has been edited by weikee: Jul 12 2013, 09:27 PM

Then changing to 63A need rewiring the whole house?
How much will it cost to do rewiring? and adding socket? (Estimate)

dont you have a bigger and clearer pic?

The photo taken using hp...sorry...

Check your incoming fuse near the meter. That is total max allow current.

i can only see the 32A fuse.. which is more than enough for a house..
32A x 240V = 7680W maximum load your DB can handle..

ur total connected load is..?
lighting, socket outlet, fridge, tv, a/c, w/htr and so on...?

12kW would be around 50+ amps which is way over what the protection device can handle at 32 amps.

Proper cabling is important, but you'll have to size your protection (be it circuit breaker or RCD correctly), also water heaters should always have an RCD instead of a standard SP/DP circuit breaker to prevent death by electrocution. The last thing I want to do is die naked.

One should also note the size of ground wiring and staking and resistance required for the load being used. If you supply cabling is 20 mil and can carry 150 amps oso no use if you neutral conductor is small and your neutral block is tiny.

Electricity isn't just about current.

Seems getting complicated!
Should I discuss with the developer electrician to get the information about the wiring of the house?

never assume when it come to electricity...
2hp is only around 1.5kw and not 10kw..

and theres a "faktor pelbagai" (diversity factor) for electrical calculation...

example: 1 unit of 20A MCB and be use for up to 3 unit of 13A S/S/O..

This post has been edited by mikicun: Jul 12 2013, 09:53 PM

what is MCB and S/S/O?

MCB is miniature circuit breaker, usually alongside RCCB (refer to ur pictures)


S/S/O is switch socket outlet, usually the 13A 3pin socket at your wall (wall socket)


This post has been edited by mikicun: Jul 12 2013, 09:58 PM

TQ for the explanation.
btw, how you upload the photo?

Can use for 3 units of 13Amp face plate, but if 3 running at high current it will trip the MCB. Depend the load.

Single 32 Amps will not go up to 12kw, but with two 32amp he can go up to 12kw without issue if load are properly distributed.

Std practice is having same wire thickness for Neutral and Live.

Than again, if you notice incoming from TNB have 3 Live wires (RYB), and one Neutral wires. Every wonder why Neutral don't need the total thickness of 3 Live wires?

This post has been edited by weikee: Jul 12 2013, 10:23 PM