Breaking down three phase

[wade88]

Nice one man, muchos gracias

 

[wade88]

I lost the manual for mine, but just checked the downlaodable one from fluke website and you are correct...so was I, in a back handed sort of way. makes a change.

 

[topquark]

Nice one man, muchos gracias

De nada, but check your manual for the details!

 

[wade88]

Manuals are for Germans...

 

[wade88]

One other quick thing quark, if i was to use a three pole breaker, the process would be no different would it, i would just be isolating all three circuits from one breaker instead of three seperate mcbs.

Im afraid i have to ask these no brainers to be sure to be sure...as some Irish fella said

 

[telectrix]

NO!.each single phase circuit must have it's own individual breaker, so as to be able to isolate 1 circuit without isolating all 3

 

[topquark]

NO!.each single phase circuit must have it's own individual breaker, so as to be able to isolate 1 circuit without isolating all 3

^^^^^ As telectrix has said each circuit must be isolatable individually. The only time you would use a 3 pole device is if it was feeding one (3 phase) circuit.

 

[wade88]

Its a good job i did ask then! Makes sense. Thanks again lads

 

[telectrix]

in a 3 phase board, you can replace a 3 phase breaker with 3 1 phase, no sweat.

 

[wade88]

So i can pop that 3 pole out and replace it with 3 single pole mcb's as we have gone through above and convert it to 3 seperate circuits etc. cool cool. Thanks lads

 

[telectrix]

eggsakkly

 

[wade88]

soup-herb

 

[mozzo]

if you get the phase wrong tpo a motor circuit then the motor will spin in the wrong direction, causing a potential dangerous situation if the motor is not protected by some device that detects phase sequence error.

 

[Knobhead]

I’m just curious, how did we get to phase rotation when we started with three single-phase sockets?
OK they are on separate phases but just where does rotation come in to it?

 

[mozzo]

I was adding some comment in response to some statements and questions on page 1 of this thread. We have moved on since then and I probably should have included a quote.