Never really fully understood this... a relay with specs of "7 amps @ 240volts" or... "120vac @ 12amps"
be 1amp at 120volts (120 watts) or 240volts at 0.5amps (120 watts) that's the max the relay will allow, but higher the voltage the less current and less heat?...
eg, imagine boiling a kettle from 6vdc how thick would the wires have to be to handle that much current, higher voltage less heat? so how come Relays don't work on the same principal ?
120 volts, max 10 amps, 240 volts, max 10 amps, 2000 volts, max 10 amps if it's the current that causes the heat not the voltage?
(Chances are i'm being amazingly dense right now, if so please tell me where my brain is going wrong - cheers )
be 1amp at 120volts (120 watts) or 240volts at 0.5amps (120 watts) that's the max the relay will allow, but higher the voltage the less current and less heat?...
eg, imagine boiling a kettle from 6vdc how thick would the wires have to be to handle that much current, higher voltage less heat? so how come Relays don't work on the same principal ?
120 volts, max 10 amps, 240 volts, max 10 amps, 2000 volts, max 10 amps if it's the current that causes the heat not the voltage?
(Chances are i'm being amazingly dense right now, if so please tell me where my brain is going wrong - cheers )