General > General Technical Chat
MOV fire risk
coppice:
--- Quote from: SiliconWizard on December 19, 2023, 10:56:42 pm ---Yes, twice the current is like not negligible.
--- End quote ---
Its questionable if they have twice the current. The weak load that's possible from a US socket means they don't have most of the high consumption appliances, like 3kW kettles and 2.5kW hair dryers that are normal in 220-240V mains countries.
coppercone2:
how much faster do you need that water boiled god damn
AVGresponding:
--- Quote from: coppercone2 on December 20, 2023, 12:39:04 am ---how much faster do you need that water boiled god damn
--- End quote ---
Hey, when I want a cup of tea, I want it in the next few minutes, not the next day! :-DD
CosteC:
--- Quote from: coppercone2 on December 19, 2023, 09:33:57 pm ---where is this risk of fires increased with 120V ?? who made these stats.
--- End quote ---
https://www.usfa.fema.gov/downloads/pdf/statistics/v19i8.pdf
https://www.ishn.com/articles/95801-electrical-malfunctions-a-top-cause-of-home-fires-in-us
I suppose higher currents, toxic relationship with wirenuts, widespread of wood in housing construction might have something to do with it.
Also USA sockets are famously horrible and famously widespread. More famous is only tendency of manufacturers to use thinner mains cables or make the out of aluminium.
I believe in 230 V systems mains impedance is of lesser importance, so it is easier to rupture a fuse if MOV of anything else go sideways.
jfiresto:
--- Quote from: coppice on December 20, 2023, 12:31:39 am ---... The weak load that's possible from a US socket means they don't have most of the high consumption appliances, like 3kW kettles and 2.5kW hair dryers that are normal in 220-240V mains countries.
--- End quote ---
At least in these parts, I would say that 3kW is not unusual. A few years back, our local Aldi ended up with a big pile of returned Strix-designed, 3kW electric kettles which were too much for the 10A circuits in many of the flats built the first couple decades after the war. I have since not seen more than ca. 2kW from Aldi Nord.
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