Hmm how to tell if my main fuse is of higher rating?

Because the electrician change the old single row DB to a three row DB?

Do I need to take picture of it?

This post has been edited by S'aimer: Aug 12 2014, 09:34 PM

The fuse does have a rating, just have a check on it.
Even if the main fuse is rated high, does not means the wire rated to it. So you still need to lay new wire and their own 13A fuse for air conds.

Problem is. The electrical work has been done already

Saw a new thick bunch of wires dangling at the storeroom side where the Main DB is before the electrical works were completed.

Comes in red, yellow, black and green? The aircon switches are all 15A and the electrician added 3 new aircon points too

Then should be good already.

No problem with single phase. Given you have 2hp of 3 aircon and 2hp fridge running together, it draw 6kw.

You can run anything together total not more than 12kw.

I don't see any reason why insurance won't pay if it run within the limit, and with proper wiring. Unless House owner using wrong wire sizing maybe. A single phase max fuse is 63amps with the correct wire sizing. If you have come across such information from Insurance do share with us.

Thank you bro supersound and bro ozak.

Was looking through my reno photos and realize I didn't take pics of the wires at storeroom!

Cross my fingers everything is good.

Is on the TNB application form on the requirement.
And insurance company will use this form and fire department's report to decide pay or not pay in case of fire.
Also, I do know that with single phase I can run 5-6 air conds without problem but when something happens I don't want insurance company have an excuse to deny a claim.

This post has been edited by supersound: Aug 13 2014, 02:27 AM

Please tell me which line state not support of 3rd ac?

http://www.tnb.com.my/application/uploads/...cation_Form.pdf


I have also consult General insurance agent, nothing to do with AC quantity installed.

http://www.tnb.com.my/residential/manage-y...upply-type.html
You can always ignore this and your agent never tells you the truth.
Again nothing happens everybody happy, something happens you enjoy it.

1HP = 0.75KW

750/240 = 3~4A,

Safety margin let say 25%, make it 5A per air cond

5 x 6 = 30A.

Still within the capability of a single phase that is 50A.

You cannot overload the single phase, but there is no rule said single phase house being equiped with 6 air-cond then may void the fire insurance coverage.

Single Phase are allow to go up to 63Amps, giving 25% safety margin is 47.25 Amps, and using 230v, is 10867 Watt. it can drive 10 HP in total.

Is still more than 3AC

The 50Amps is after the safety margin of 63Amps

This post has been edited by weikee: Aug 13 2014, 10:11 AM

You are right, but again TNB already stated the guideline we "should" upgrade to 3 phase once we exceeding 3 air conds.
Your calculation are assuming that it is good quality of copper wire being used. It not even taking in to account of the qaulity, length and efficiency of the wire. Where's the heat generated calculation?
In some sense indeed we can't overload a single phase, but we can overload the wire which later overload the main fuse.
For sure insurance company never stated the rule on this as they release the claim's payment based on official report by government. Have you ever claim insurance before? The company need 1 single word only to deny a claim.

I would like to see the guidelines/rules state in this.
Ty.

I forgot where I posted that guideline, maybe a find using the search function will help you to get the answer fast. I just posted it recently.

Took a look at my DB and It appears that I have 63A for my main fuse.

But realised that I don't see any fiber ready connection in storeroom or a telephone port at the back?


Attached thumbnail(s)

What is fiber/tel line got to do with electrical?

Has nothing to do with electrical but seeing that the fiber point is supposed to be put in the storeroom with the DB, I reckon I will have to install the fiber point.

Depend where you want your equipment at. It usually at TV area because unifi come with TV subscription. Unless you have already prepare LAN point.

Bro,

Mind if I PM you?