View Full Version : Distribution cct's
PAULD5HSLR
Aug 3, 2012, 06:37 AM
Can you please explain why distribution cct's and cct's>32a must disconnect in 5 secs when <32a in .4 secs
tkrussell
Aug 3, 2012, 06:42 AM
Please spell out "CCT".
What is your situation?
What are you working on?
Why are you asking the question?
PAULD5HSLR
Aug 3, 2012, 09:20 AM
I am studying to become electrician and cct is circuit
tkrussell
Aug 3, 2012, 10:38 AM
OK, and the .5 seconds is by the protection of an RCD, residual current device?
What does your study materials state on this subject?
I suspect your dealing with RCD, and you may want to review these:
Residual-current device - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Residual-current_device)
PAULD5HSLR
Aug 5, 2012, 08:18 AM
Further to my original question. I want to know why circuits <32A must disconnect in .4 seconds and circuits >32A and distribution circuits must disconnect in 5 seconds by the overcurrent device.
tkrussell
Aug 6, 2012, 02:45 AM
Why not respond to my post to your original question? {Threads merged}
Are you dealing with RCD?
https://www.askmehelpdesk.com/electrical-lighting/electrical-questions-answered-free-690034.html