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maximum size of RCD

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xAlex

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Guys, Admittedly a college question but i'm really pushed tonight..If anyone can respond (with the answer) by 9:30pm i would really appriciate. I swear I will look it up subsequently and fully understand the topic.
Cheers...

Q
An earth electrode has a resistance of 120Ω. What is the maximum size of RCD permitted to keep the touch voltage below 25V?
 
Awww, you like to see a bloke struggle. But thanks for the tip. ... I reckon this anyway...

I Delta N

I Delta N

  • Media owner xAlex
  • Date added
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There you are - you knew the answer all along.

And like you've always been told, the good thing about showing your working is that it shows you understand it, and that saying 25/120 = 0.21mA was just a minor slip... :wink:
 

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