Thread: Amp rating of switches.
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12-10-2016 #1
Hello all.
Apologies for the rudimentary nature of this post, electrics are a mystery to me - the meagre knowledge I occasionally acquire I seem to promptly forget...
I'm putting together a small stirring contraption that uses one of those 25rpm microwave motors. The motor runs off the mains - 240VAC - and I'm going to use a mini SPST toggle switch as an on/off. The switch I bought is this one:
http://www.maplin.co.uk/p/ultra-mini...tch-spst-fh97f
...it's rated at 3A at 125V or 1A at 240V. The motor has a power rating of 4W so therefore draws .016A (it'll barely get any load so it's unlikely to draw much more than this) - I'll wire the live through the switch and the neutral direct to the motor.
Whilst looking for switches I came across the 10A rocker switches that you can buy from Halfords for use in 12VDC car applications - the connectors look pretty chunky and that got me thinking about whether this hardware would do the job - okay, it's three times the price and I've heard about relatively low DC currents blowing AC hardware rated for much higher amperages, but it's just added a layer of confusion... An amp's an amp, right? Seemingly not - anyone have a layman's explanation that I might have a chance of getting all of my three brain cells around..?
Wal.
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