Published: 30 July 2008
Category: Q&A
Our Voltimum Experts answer your questions on a daily basis in our Technical Expertise area. This one, concerning touch voltage calculation, is answered by SELECT:
Question: I understand that the calculation for determining touch voltage is Ze multiplied by the rated mA of an RCD. If, for example, a TT Ze is 200ohms and the main RCD is rated at 100mA, the calculation would be 200x100 divided by 1000 = 20V? Is the formula I have used correct? Please advise!
Answer: Yes, I can confirm that your calculation is correct.
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