Electronics > Beginners
ABC News posted a story re: Jacked Mains Voltage is increasing power bills
IanB:
--- Quote from: timenutgoblin on February 13, 2019, 05:05:35 am ---i tried the idea of using a transformer to increase/decrease the mains AC voltage at the GPO...
--- End quote ---
I keep doing a double take every time I see people referring to the GPO in the context of electricity. What has the General Post Office to do with the electrical supply?
IconicPCB:
GPO == general purpose Outlet...the gozauta hole for lectric
Psi:
--- Quote from: sibeen on November 08, 2018, 05:20:39 am ---Yeah, $1,200 more because the voltage is a tad high – ROFL, and I bet he’s got something to sell. It's a bullshit article
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I bet he failed to correctly account for all the appliances that produce heat.
Probably just said, X more volts = Y more amps in appliance X so i'm paying Z more money.
Won't have considered things like the cloths dryer drawing more power yes, but taking less time to dry your clothes. Or the stove elements drawing more power but for shorter bursts due to thermostat.
He'll probably get it fixed and become annoyed that his jug/kettle is taking too long to boil water now :-DD
brucehoult:
What I haven't seen anyone discuss is the effect of a high or low voltage on the electricity meter. How do they work and what do they actually measure?
I know the output is labelled as kWh, but is it really? Or do they actually measure (integrate) amps and just assume the voltage is 240? What happens if you put a meter calibrated for 240V on a 110V supply? Does it still get the kWh about right, or does it over-read the kWh by a factor of 2, or something else?
If the meter is actually measuring amps, and the house has most of the load from things that adjust for higher voltage by lowering the current or lowering the duty cycle (and thus average current) -- if that's how it works then he' might be being *undercharged* for energy use.
oPossum:
Mechanical and electronic power meters both measure actual Watts.
Here is an explanation of how the mechanical meters do it:
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