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Old 10-06-2007, 11:21 PM   #1
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Default RCD trip point
I know I asked this in some other thread, but I can't find it. At what point, in milliamps, do RCD mains trip on a ground fault condition?
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Old 10-07-2007, 05:55 AM   #2
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10 and 30 ma and not sure of the time factor.

http://www.electriciantalk.com/showt...=8911#post8911
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Old 10-07-2007, 02:07 PM   #3
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Industry standard is 30 mS Marc. But they do vary. I use time delay rcd's where two are in series. We have a Regulation here that requires one to be fitted upstream so as to minimise inconvenience. Not a readily recognised one either - since I come across twin unit fault tripping circuits in my maintenance work all the time. Chris will be aware of this problem since he worked for a Supply Company at one time I think.

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Old 10-08-2007, 08:38 AM   #4
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Quote:
Originally Posted by MDShunk View Post
I know I asked this in some other thread, but I can't find it. At what point, in milliamps, do RCD mains trip on a ground fault condition?
Marc,
checK out this site:
http://www.westernautomation.com/pages/demystify.htm

I got a lot of good information on RCD's when I needed some UK equipment to do a job. The electrical principles are almost the same but the equipment is definably different.

Carry On!
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Old 10-08-2007, 03:21 PM   #5
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John

I liked that western automation site myself. Great info.

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