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 A single home wall plug can hold how many Watt?

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mikicun
post Feb 12 2010, 02:22 PM

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QUOTE(CyberSundayz @ Feb 12 2010, 02:17 PM)
so..single plug for iron + table fan(with ext.)= no a prob right?


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...
aeronic
post Feb 12 2010, 02:29 PM

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QUOTE(CyberSundayz @ Feb 12 2010, 02:10 PM)
just curiuos.. hmm.gif  hmm.gif
*
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
IluvProton
post Feb 12 2010, 02:40 PM

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sked virus no klik
TSCyberSundayz
post Feb 12 2010, 03:13 PM

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QUOTE(IluvProton @ Feb 12 2010, 02:40 PM)
sked virus no klik
*
lolz
we got antidote flex.gif
lwb
post Feb 12 2010, 03:16 PM

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+1 bestest!!

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

QUOTE(aeronic @ Feb 12 2010, 02:29 PM)
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
*
aeronic
post Feb 12 2010, 03:22 PM

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QUOTE(lwb @ Feb 12 2010, 03:16 PM)
+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"
lwb
post Feb 12 2010, 03:31 PM

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

QUOTE(aeronic @ Feb 12 2010, 03:22 PM)
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"
*
mcchin
post Feb 12 2010, 03:34 PM

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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
aeronic
post Feb 12 2010, 03:35 PM

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QUOTE(lwb @ Feb 12 2010, 03:31 PM)
ffoouuuuuuuu... turnin racsist, ye?
i came from good school last tiem..
*
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..... drool.gif

This post has been edited by aeronic: Feb 12 2010, 03:44 PM
accitzone
post Feb 12 2010, 03:36 PM

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it's not the Wattage tht matters, it's the Amperage that can trigger a short circuit...
ryosuke
post Feb 12 2010, 03:37 PM

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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 biggrin.gif

btw dun link too many devices with one socket, some devices will draw more current during initial start up icon_rolleyes.gif
aeronic
post Feb 12 2010, 03:37 PM

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QUOTE(mcchin @ Feb 12 2010, 03:34 PM)
i would rather have 415v as standard

as P=IV
and where V=IR

so

P= 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
*
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"
mcchin
post Feb 12 2010, 03:38 PM

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QUOTE(accitzone @ Feb 12 2010, 03:36 PM)
it's not the Wattage tht matters, it's the Amperage that can trigger a short circuit...
*
but since he voltage is a constant here

the bigger amperage equals to bigger watt
and vice versa
aeronic
post Feb 12 2010, 03:40 PM

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QUOTE(ryosuke @ Feb 12 2010, 03:37 PM)
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  biggrin.gif

btw dun link too many devices with one socket, some devices will draw more current during initial start up  icon_rolleyes.gif
*
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?
yeezai
post Feb 12 2010, 03:41 PM

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

lwb
post Feb 12 2010, 03:43 PM

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

QUOTE(aeronic @ 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 specs wearing cosplay attire such as sailormoon does not come to mind
you said you're from a good school, please go figure..... drool.gif
*
aeronic
post Feb 12 2010, 03:45 PM

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QUOTE(lwb @ Feb 12 2010, 03:43 PM)
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
ryosuke
post Feb 12 2010, 03:46 PM

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QUOTE(aeronic @ Feb 12 2010, 03:40 PM)
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?
*
Yeah, my house a bit old (actually is my father house), 10 years plus already sweat.gif . Those theory is my diploma lecturer told me when i did my project blush.gif
aeronic
post Feb 12 2010, 03:47 PM

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QUOTE(yeezai @ Feb 12 2010, 03:41 PM)
4730 watts one hifi oredi enuf....but will the fuse box explode like dat?
*
did you get that reading from PMPO for the AMP/Speaker or something ?
doh.gif doh.gif doh.gif
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
lwb
post Feb 12 2010, 03:49 PM

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pmpo is noob la.. mane rms?

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