theterminator
Wise Old Owl
I have a 600 VA Intex UPS & an iBall Cabinet cum PSU which I think is 350 W , don't remember the exact wattage but it cost me Rs. 1000 (Cabinet + PSU).
how much power does my desktop draw
harshilsharma63
DIY FTW!
you can use this sote: eXtreme Power Supply Calculator
At ideal, your PC my be consuming ~70-80 W excluding monitor.
At ideal, your PC my be consuming ~70-80 W excluding monitor.
ashis_lakra
Gaming Unlimited
From wall 
OP
theterminator
Wise Old Owl
I'll soon upgrade man ..
tubelight
Broken In
How do you calculate the power usage cost from that?
rijinpk1
Aspiring Novelist
depends on the configuration buddy.
you have to know what rates are charged per Watt-hour by government in your area (which they don't tell easily ). then you can multiply and compute .
harshilsharma63
DIY FTW!
> The tariff is applied on number of units consumed.
> One unit = 1 kWh = an appliance rated at 1 kW or 1000 W run for an hour.
> Suppose your PC's average power consumption is 'x' W and your region's electricity tariff is Rs. 'y' per unit and you run the PC for 'z' hours daily, then your monthlr charge for running PC will be : [((x/1000) * z ) * y] per day.
tubelight
Broken In
So at 390w usage with 10rs per unit and 12 hours a day comes to 46.8 rs a day. That sounds reasonable enough. I'd probably add 20 rs more for 2 monitors per day.
harshilsharma63
DIY FTW!
Correct. 10 rupees per unit is very high. You should verify the tariff.
kARTechnology
Sony " VA" "IO"
i got myself a clamp meter and measured the conpumtion in watts of my pc(uintel g620+gigabyte mobo and all other accessories with tvs printer)
it was 0.2A
means
240V x 0.2A=48W
it was 0.2A
means
240V x 0.2A=48W
what method have you used?
also you forgot to multiply the value by 1.4. that's the rms value.
some experts will be able to explain you more.
also don't forget to add in 30% extra cost as government meters are bogus and are set to overcharge you. (verified news )
^^voltage in home is RMS(220/240v) so no need to convert it to absolute/peak values & assuming sine wave(should be true for govt power) even cheap/typical multimeter show correct rms voltage value only for ac voltage.bill is determined by energy consumed & this in turn is decided by V(rms)*I(rms)*time.since psu in pc convert ac to dc with efficiency ranging from 50-90%(depending on psu & load) there shouldn't be much difference between I & I(rms) so above calculation should give close approximation of power consumed.
kARTechnology
Sony " VA" "IO"
this clamp meter method is used to install MCB's in houses or any other place in distribution boards because it gives accurate value
for example i have installed a new 10A C-Curve MCB ( will trip if load exceeds 10A, continously, not for milli seconds )
and my lightning load with fans and pc was 11.5A, and it tripped, so i canged it to 16A C curve MCB
this method gives really a very close approximate of the current running through the wire....
clamp meter costs 350 rupees here in local shop, no name brand
thanks for the enlightenment. my clamp is sanwa pro series which costed 4k and measures both ac and dc amp. it's a 'hall effect' meter, you can google about this. however I've always had to multiply the value by 1.4 for AC power. suppose I'm measuring a fan that says 400w in user manual. , I've had to multiply my reading by 1.4 to get spec values.
more knowledge shall Help bro.
i am not familiar with settings of "hall effect" power sensors but it seems like it measures instantaneous power or in other words it acts more like an accurate conversion of AC to DC power so it shows actual power being consumed at that instant which would be less than AC rms value since it fluctuates continuously.maybe your meter is set as too accurate & to get rms value instead of accurate instantaneous value it will need a settings change.
kARTechnology
Sony " VA" "IO"
so what should i do with my meter? a 300 rs one with only ac amp measuring and voltage....
should i just multiply Amps x 230 = Watts ? am i correct