I assume normal 15A is not enough?

Are those 4mm cable capable of 20A?

Please advise I am not exactly sure...

What is hobs watt rating?

4mm² can handle 20amps no problem.

one is 4100 and another one 4500.. two hobs.. one for dry n one for wet

Not all hobs have the same requirements. Some have batteries and do not need a power outlet, others need a plug point.

Best is to decide on a hob and purchase it prior to doing your electrical wiring or based on existing availability.

Had a friend who thought all hobs were done the same and did not communicate to his interior designer which hob he bought. Ended up having to pull wiring as his required a plug point. Needless to say he wasn't very happy with the final result. LOL!

This post has been edited by adrianjc: Nov 17 2013, 08:36 PM

I have a 4 zone cooking hob (haven't install yet), the nominal power on it is 6000W

so 6000W/230V = about 25 or 26amp if I calculate right.

in this case, you need to read the specs of the electric hob, not just the advantage of the hob you are looking at.
Always ask the salesperson questions if you are really keen to get that hob, it will be easier to tell the electrician.

This post has been edited by S'aimer: Nov 17 2013, 11:23 PM

There is thsi "IEE wiring regulation 2001", usually follow by UK, and most commonwealth.

If I recall, 4mm cable, is 25Amps, and with ambient temperature of 35c, we need to multiply the temperature correction factor of 0.94. So is about 23.5Amps.

Below updated guide, is a very good reference for "thos" claim as profession wireman, please refer.

http://www.rsb.gov.ae/uploads/ElecWiringRegs2007Rev01.pdf Page 155.

You need minimal 4mm

What kind of hob that suck such a high power? Restaurant use?

And you need sparate set of wire and mcb for each. No sharing for your 2 hob.

lol, which restaurant uses electric hob? Usually is gas hobs for restaurants and the only electric hobs are those 1 zone portable electric induction hob for steamboat and that alone won't consume that much power.

Its a teka vitroceramic hob with 4 zones.

Induction hobs with 4 zones have connection rating of 7200W/32AMP, apparently induction hobs consume more power than vitroceramic hobs based on comparisons of the W/AMP rate for induction and vitroceramic types and this would be only if u cook on all 4 zones simultaneously like gas hobs. Just read the technical specs and you can do the comparisons.

Can you show me where is the consume/comparison tehnical spec? I go in the website. But only state roughly spec. Even the pdf brochure.

7.2kw is killing. Unless over hundred bill everymth is kacang putih.

may i know is it check power comsuption? If 4600W share power means 2300W each side 20amp enough?

This post has been edited by petlu28: Nov 19 2013, 10:14 AM

Don't get what you mean.

My Hob if both side if ON maximum need 4600W. So if i cabling 20amp enough or not?

why would you want electric hob? They start slow, consumes a lot of energy. I have a Fish and Paykel that I don't use. I use a single induction hob instead which is great -it heats up fast and cheap to operate and doesn't heat up your whole house.
If I can do again, I would totally scrap electric hob, install ikea two/four induction cooker.
Just that I can no longer use my favourite aluminium Happy Call Pan which I miss dearly. I heard there is an induction hob os some sort that can be used with all pans. That's the one to go for!
Happy Pan is great and so is induction hob. Between the two, I have to choose induction hob with heavy heart.

Ozak:

For teka, http://www.teka.com/products/index/10#!prettyPhoto

choose the induction and vitroceramic hob (1 each) and compare them, the list will come out after you click on compare products.

Look for the maximum connection rating(W) in the electrical connection section. you can see whats the maximum rating for induction, vitroceramic. In the technical specs manual by teka, u need to look for the nominal power (W) listed, not the power rate per zone.

However, I can give another example of vitroceramic and induction hob in another website.

http://www.mayer.sg/index.php/products/hob...ic-641-b-detail (Induction Hob)
http://www.mayer.sg/index.php/products/hob...c-641-db-detail (Vitroceramic Hob)

The induction hob states overall power of 7200W while the vitroceramic hob states 6600W

Atisha:

I've been using a 2 zone electric hob for a long time and I don't cook everyday, maybe 2-3 times a week and my electricity usage is pretty moderate for 2 pax (The bill never even exceeds 200 per month) If its for a family of 4 or 5 and need to cook 3-4 times a week, then the electricity bill may be about 400-500 per month on rough estimation? Induction hob have higher electrical power rating and the start up is slower than vitroceramic. Also, its safer than using gas because if you have old people living with you and they sometimes forget to turn off the gas, it can be a potential fire hazard in the long run.

BTW i thought induction and vitroceramic hobs fall under electric hob classification?

This post has been edited by S'aimer: Nov 19 2013, 01:10 PM

Induction with such watt are very powerful. Not sure if you have use induction before. I use a hob version, and now the external. I also use vitroceramic before. If both set at 1000watt, I finish cooking the same instant noodle on induction cooker, and the water on vitroceramic cooker only start boiling. Vitroceramic need time to heat the utensile, if cooking and transfer heat via radiant. Induction heats up almost instantaneously.

Vitroceramic can use many more difference utensile, Induction utensile are growing. I even see now clay pot for induction.

This post has been edited by weikee: Nov 19 2013, 02:04 PM

My Bosch induction hob requires 32A However this true if you enable the power boost function and all 3 zones which one do not do.

I have decided to use a 4mm wire with 20A switches.

Weikee: I've been using a vitroceramic hob mostly so cooking time is not slow for me if i set to the max heat on my hob. Induction on the other hand is more child friendly as it will not heat anything else other than induction based cookware which is a plus point and the minus point is induction hobs are more expensive than vitroceramic hobs. So my rationale is if both types uses electricity, then the cost factor is either a minus or plus point in my decision in choosing which hob type. In this aspect, there is no prize given to why I use vitroceramic the 2nd time round again.

However I have not cooked on an induction hob except for the ones used for steamboat outside I guess? The heat up time is almost similar though that's why I have the impression induction hob has a slightly slower cooking time but I am not really sure about the heat time 100%


This post has been edited by S'aimer: Nov 19 2013, 02:44 PM

Because the steamboat restaurant are using low power induction. Imagine all running 1000Watt, and the number of pots can go up to 100, and imagine everyone switch on and use, that is about 100,000 Watt. That shop can blow up. I seen one on the table with the watt rating, about 150watt only.

Is already study made by US gov Induction is 12% more saving compare to non induction electric hob.

http://en.wikipedia.org/wiki/Induction_cooking

[According to the U.S. Department of Energy, the efficiency of energy transfer for an induction cooker is 84%, versus 74% for a smooth-top non-induction electrical unit, for an approximate 12% saving in energy for the same amount of heat transfer.]