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Fri 7 Oct, 2016 02:43 pm
I've got an international power strip with a built in circuit breaker. The strip is rated at 240v with 10amp circuit breaker. It fits 120v plugs as well (like in US). Assuming there is just one simple breaker in it, would the breaker be operating at 20amps when powered at 120v? Or can breakers keep a consistent amp cutoff across different voltages?
Current is current, regardless of voltage. A 10 amp breaker trips at 10 amps.
Vote me down all you like, I know what I'm talking about.
@contrex,
You got thumbed down for no good technical reason.
Science remains science, even if people don't like it..
@contrex,
Hi Con. Beng somewhat unfamiliar with the command I tried it on the fella who responded to your last posting, whereupon it totally disappeared
Sposta be?
Got a real kick from your postings however. But don't tell anybody
@kitand,
kitand wrote:[...] can breakers keep a consistent amp cutoff across different voltages?
In North America, many places have 120 V/240 V service and there are "slash rated" 120/240 V circuit breakers which can be used with such installations. The voltage before the slash is the maximum voltage to ground in the system (the 240 V power company transformer secondary is center-tapped and the tap is grounded thus the max volts to ground is 120). You can also get "straight" rated 240 V breakers for use in 'true' 240 V to ground circuits. These will be of more robust construction with insulation rated for the higher voltage. You could use one of these in a 120 V circuit if you wanted, but it would be a needless expense. For either type of breaker, the rated current marking in amps is the same for either a 120 V or 240 V circuit.
@contrex,
Thank all gosh for Eng and Con
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