Re: 240v vs 120v Silvias
When looking for how much "grunt" an appliance has, you have to look at watts. Thats irrespective of whether youre in the USA, Melbourne or in your 12-volt car.
The current in the USA is approx twice that of Australia, but when working out what power the appliance has, you look at Watts.
watts = amps x volts
A 4 amp appliance in the US would produce 440 Watts (w= 4 amps x 110 volts)
But a 4 amp appliance in Australia would produce 960 watts ( 4 amps x 240 volts).
A 50 watt TV which can run on 12 volts takes a hefty 4 amps of current, (which can cause heating along the power circuit).
The same 50 watt tv on 240 v draws a trifling --and safer-- 0.2 amps.
These are approximations only, as mains power is probably closer to 230 V and 12v power can range from about 13.8 volts down to 11 for a flat battery.
--Robusto
When looking for how much "grunt" an appliance has, you have to look at watts. Thats irrespective of whether youre in the USA, Melbourne or in your 12-volt car.
The current in the USA is approx twice that of Australia, but when working out what power the appliance has, you look at Watts.
watts = amps x volts
A 4 amp appliance in the US would produce 440 Watts (w= 4 amps x 110 volts)
But a 4 amp appliance in Australia would produce 960 watts ( 4 amps x 240 volts).
A 50 watt TV which can run on 12 volts takes a hefty 4 amps of current, (which can cause heating along the power circuit).
The same 50 watt tv on 240 v draws a trifling --and safer-- 0.2 amps.
These are approximations only, as mains power is probably closer to 230 V and 12v power can range from about 13.8 volts down to 11 for a flat battery.
--Robusto


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