2 x ring circuits controlled via stop start

[nidgew]

hi everyone i have been given the task of wiring up 2 x 32 a ring circuits in a small kitchen protected by 2 x 32a rcbo. the problem is they want both rings to be wired via a emergency stop start button. ie they can push stop button and both rings would de energise.
i believe we would utilise a contactor to achieve this
can anybody advise please much appreciated
nigel

 

[ukpablo]

whats the reason as surely the RCBO's will protect the cct and any fault occuring on it?

 

[nidgew]

i believe they have a slicer and a mixer etc so in case of emergency etc
many thanks

 

[i=p/u]

couldnt you just switch specific sockets, im not an expert so dont listen if silli

 

[johnboy6083]

you would wire a stop circuit in series with the contactor coil. it would be best if the buttons had release keys, so that the button cannot be reset by accident.

 

[telectrix]

ahhh, thumb salad, yummy

 

[silva.foxx]

Contactors with e/stops that latch, with reset circuit, not just key-release e/stops.

Also, Allen-Bradley do some fantastic e/stops that open should the button become detached from the contacts.

This has been covered a short while a go, I think in the scenario of a hospital.

http://www.electriciansforums.net/c.../16040-contactors-emergency-stop-buttons.html

... it may help.