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Richard Brookman
Guest
So [email protected] was, like
> On Wed, 1 Dec 2004 19:50:28 +0000 (UTC), "Richard Brookman"
> <[email protected]> wrote:
>
>>I understand watts and amps, but what's a kva when it's at home?
>
> It's the maximum rms current times the rms voltage. With ac the
> current can run out of phase with the Voltage, especially running
> things like motors, so while a load with 230 Volts across it and 4
> Amps flowing through it will draw 4 times 230 Watts instantaneously
> the current times Volts could be higher. To accommodate this the
> generator electrics are specified as a maximum Volts (what the
> insulation in coils can work at) times the maximum current (what the
> wires in the generator can stand without getting too hot). So the 1kW
> generator may be rated at 1.5kVA, there's generally no problem with
> drawing too much power from the system as it simply drags the engine
> down on these small devices.
>
> AJH
Very clear explanation, thanks.
--
Rich
Pas d'elle yeux Rhone que nous
> On Wed, 1 Dec 2004 19:50:28 +0000 (UTC), "Richard Brookman"
> <[email protected]> wrote:
>
>>I understand watts and amps, but what's a kva when it's at home?
>
> It's the maximum rms current times the rms voltage. With ac the
> current can run out of phase with the Voltage, especially running
> things like motors, so while a load with 230 Volts across it and 4
> Amps flowing through it will draw 4 times 230 Watts instantaneously
> the current times Volts could be higher. To accommodate this the
> generator electrics are specified as a maximum Volts (what the
> insulation in coils can work at) times the maximum current (what the
> wires in the generator can stand without getting too hot). So the 1kW
> generator may be rated at 1.5kVA, there's generally no problem with
> drawing too much power from the system as it simply drags the engine
> down on these small devices.
>
> AJH
Very clear explanation, thanks.
--
Rich
Pas d'elle yeux Rhone que nous