When carrying out a ring circuit test the end to end resistance for each live conductor is 0.6O and the cpc end to end resistance is 1.0O. The expected value between L and E at each socket after cross connection would be

Question

Quizplus · Accepted Answer

The expected value between L and E at each socket after cross connection is the average of the end-to-end resistances of the live conductor and the cpc. Therefore, (0.6Ω + 1.0Ω) / 2 = 0.8Ω. However, since the question asks for the resistance at each socket, we divide by 2 again, resulting in 0.4Ω.

When Carrying Out a Ring Circuit Test the End to End