just curiuos..

This post has been edited by CyberSundayz: Feb 12 2010, 02:11 PM

240

240Watt??

1400watt

over 9000watts

hmmm..? really? i just confiusing xD

500 watt to be exact

be real dude

ur normal power socket at home will be 230V

Dunno lo. Mine doing 2 PC with 500wat PSU plus a lappy and desk fan. Still ok what...

a single wall plug usually have a min 20A MCB; so that would be 240V x 20A = 4800W max

This post has been edited by mikicun: Feb 12 2010, 02:16 PM

240v..yup, but = how many watt?

i think this is right
thx

---

Added on February 12, 2010, 2:17 pmso..single plug for iron + table fan(with ext.)= no a prob right?

This post has been edited by CyberSundayz: Feb 12 2010, 02:17 PM

P = VI haha

keep plug in electric appliances until for smoke come out, that is the max

if too much also ur main fuse will cut it out la, aiyo

I suggest the device that use heat elements did not share the same plug. Bcoz it cosume more watts...

go see ure plug, normally its only 13A ~ 15A

so 240v x 13A = 3600 watts

but also remember 240 volts can also produce between 210 volts to 280 volts its not exact 240 volts

watson nyambek

dont worry.. just split and split and split

right...!

but do take note... the 20A MCB will usually being shared among 3-4 wall plugs in your house..

we dont use one 20A mcb to supply to one wall plug, since the socket itself have a 13A fuse built in...

TS, if you want serious answers please post in kopitiam Q&A

anyway i have taken the liberty to calculate for you since you're so interested
and you can ask a mod to move this to kopitiam Q&A

Malaysian voltage on paper 240V (the one you study in school text book)
Official TNB effective voltage in klang valley 230 V (penang it is 240V)

typical plug design = 13 A

but in a modern home the type of wires they use and the quality of the switches are sometimes capable of carrying up to 25 A – 30A

this is only applicable for new houses with modern wall wires
old building wires might not be able to take the heat

and nominal trip for fuse for modern homes via fuse or MCB is 20A

so assuming you wanna max out this at your own risk without blowing up or tripping

however you must account for “power efficiency” of some electrical equipments who do not use exactly the stated wattage
we will assume you do not have any broken equipments and set it at 5%

so you can try to max it out at 4370 Watts per incoming socket. using the PIV formula
Assumption: each of this socket must not share wiring with another socket and must be connected directly to the incoming mains power supply

Hope you are happy with my analysis

This post has been edited by aeronic: Feb 12 2010, 02:32 PM

sked virus no klik

lolz
we got antidote

+1 bestest!!

this is basic physics(form 4 material).. p=iv
powarr = arus kali voltan

Well but then your fat cikgu wearing tudung and holding a cane (a typical science teacher)
does not know the actual voltage in klang valley unless she is a building contractor or something
and do not know the capability on normal household socket wires
and do not know how to count the 5% efficiency used by electrical engineers

because she went for teacher training and it is not in the text book
she will just use P=IV and will blow up your house
then you say "my teacher teach me one"

ffoouuuuuuuu... turnin racsist, ye?
i came from good school last tiem..

i would rather have 415v as standard

as W=IV
and where V=IR

so

W= I (IR)

in that order

power will constitute to energy to use as well as in loss

if based on the last formula and calculate for energy loss
with resistant increases, the power loss is higher
while with current increases
the loss of power is even greater

so by using bigger voltage, the current is lower hence less loss being effected

This post has been edited by mcchin: Feb 12 2010, 03:35 PM

manaada.jpg
i am just trying to explain a typical teacher
somehow when I do that, some hot chick with hot body specs wearing cosplay attire such as sailormoon does not come to mind
you said you're from a good school, please go figure.....

This post has been edited by aeronic: Feb 12 2010, 03:44 PM

it's not the Wattage tht matters, it's the Amperage that can trigger a short circuit...

I think you need to check your mcb for your room, a 20A mcb normally used for water heater/ air cond only. For wall sockets there will be another mcb (normally 10A or so) so check out the mcb and do the math

btw dun link too many devices with one socket, some devices will draw more current during initial start up

thanks for teaching us what we already learned in form 4
but this thread opened by TS is to discuss how much you can overload the sockets in your house
not for debating how to prevent energy lose by increasing the volatge
please do not "Out Of Topic"

but since he voltage is a constant here

the bigger amperage equals to bigger watt
and vice versa

the houses I did inspection on are not
based on what you have said, i think this is because the wires used inside the walls in your house are not those thick ones
are you staying in an older house like those PJ areas or out of KL?

4730 watts one hifi oredi enuf....but will the fuse box explode like dat?

good skool means.. no hawt chicks, cosplay type of cikgu.. and oso not rike the type jiew described either..
jiew kopii tat?

copy paste modify liao

Yeah, my house a bit old (actually is my father house), 10 years plus already . Those theory is my diploma lecturer told me when i did my project

did you get that reading from PMPO for the AMP/Speaker or something ?

that is the wattage for the speaker!!!
that's not the power consumption!!!!
even the big speakers used in concert don't use so much power

pmpo is noob la.. mane rms?

the 6A or 10A mcb is for lighting only and will use a 1.5mm wires
16A and 20A are for wall sockets and will use 2.5mm wires
32A are rare in normal houses unless your house is supplied with 3phase 415V

all electrical appliances will have a bigger starting current (at least 5% bigger in less than 1ms time). this occurs when the power needed to move the motor/heating or whatever (newton law; an object that does not move will..... )
thats why u sometimes see sparks when switching on the switch...

your 2 PC using 500w PSU doesn't mean it drains 1 kilowatt.

it is dependent on your PC component, and they drain power differently when idle / load.

so even if you run on say 300w load, it's still within the confines of the 500w PSU's capacity BUT that doesn't mean it drains 300w actual power either.

the actual drain from the socket depends on your PSU efficiency.

so if your PSU efficiency is 75% then the actual drain is 400w, in which 300w is 75% of the 400w.

basically : (actual component consumption / 75) * 100 = actual wattage drain.

there ya go.

if he knows PMPO is noob and RMS is the true powahhh
then he won't have mistaken it for the power consumption either

reducing power loss depend more on the appliances efficiency converting the supplied energy into work to be done. bigger voltage less loss is used for electrical power transmission lah my friend

plus where can you get household appliances that run on 415V on the first hand.

i think what you're doing here is give an idea that sometimes voltages are not stable
that being said, your min and max voltage numbers are a little bit off
(besides wrong power calculation, which is deemed correct in form 4 science exam) link
NB: please be sure of the facts before giving examples

TNB has put a lot of voltage regulators at end substations that actively regulate the voltage at 230 Volts.
Also 280V is above the tolerance level of some transformers inside many electronic devices that has world voltage and auto convert between 110V-250V.
correct one should be 210V - 260V

10 years is not old bro. anyway, if they only have 20A MCBs on aircond outlets, they are using the wires one level down
be sure to get them checked first. there is a guide posted by another forumer in this thread.
do not try to increase the MCBs to a higher one, as the wires may overload and catch fire

This post has been edited by aeronic: Feb 12 2010, 04:20 PM

thanks goldie for the explanation...

if u put in 3000W electrical appliance into your wall socket i'll assure you the wall socket will melt in 30 minutes. it is just too hot. It also depends on the time u use your device. just put in your electric kettle and boil water then try to feel the heat generated by the appliances. typical household appliances nowadays at home take about 100W.
I have a quad core PC and it takes about 100W, LCD TV 100w, blower 1400W, electric kettle 1000W, fan 40w, fridge 400W when motor is running, washer 150W

the heat is usually generated from the fuse inside the 3 pin plug (13A). try switching it to a bigger wire and see the difference...

at 3000w, the amp is around 12A, almost reaching the limit of 13A fuse, which will melt and disconnect the circuit. so at 12A the fuse must be red hot but not reaching melting point... so there's your source of heat...

I need a help here...try to search for it already but didn't found...i want to install oven at my house...but some people said..i need at least 20 amp power point to cope-up with that...

Is that normal 13 amp power point is not enough for oven?

Hi, if I only able to see the device showing 116watt. To calculate amp usage, is the 116 watt / 240v?

normal socket is 13A x 240V (highest in malaysia supply network) = 3120VA

3120 VA with power factor 0.85 = approx. 2652Watt

2652 Watt u dun use full, normal 0.6 to 0.7 is norm

so dun use above 1800Watt

but normally i spec 20A SPN isolator for anything above 1300Watt

Hi !

i know its an old topic, so if a single home plug can handle that much of watt how much can the whole house or the main box handle ?

all down to the limit of the fuse

if entire house is fused 80A then the limit will be 19.2kW

Normal house with single phase power supply is using 63A main switch

Bumping old topic. If a DB has 3 circuit breakers with 63A, 63A and 25A rating, it means the house has 3 circuit loops?

1200w is the max

ada necro, then ada see

so many ...misguided answers here hahaha!

100A for single fuse to JB for Plug
20A for single fuse to JB for switches.

our domestic supply is 220V.

Jangan main2 la, later sot kaw die that fello.

my car wash machine is 2200W. How?

Modify it lo..
Amp put 30amp

Then wiring use 3 thick thick one lo.. like those masuk db box punya wayae

This post has been edited by Boomwick: Oct 11 2024, 02:18 PM

Your incoming breaker what size? 150A TPN?

If yes, it means you have 3 submain 63A TPN x 2nos + 25A TPN x 1 no.

It will only means you have 3 nos. of Sub-DB or DB. Within these 3 sub-DBs/ DBs, you will still have multiple circuits.