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Schnider type AC RCD passing type A rcd test.

Alan B

Wonder what your thoughts are on this.

Installing an extra cooker connection point on an existing circuit. the circuit is protected by a 80A type AC rcd and 32A MCB.

It's going to be powering an oven plus an induction hob to be added, so should be on a type A RCD.

Problem is that Schneider only have  a 63A type A rcd for over £100 before vat.

But interestingly the type AC device tripped in 19mS  with a *1 type A rcd test.

So I am thinking maybe I don't need to worry about changing the RCD, what are your thoughts.

If I do change I will probably have to go for an RCBO

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  • As with Chris Pearson's reply, I don't believe that you can consider a Type AC RCD to be akin to a Type A RCD simply because it tripped with an RCD tester set to Type A. I can't see how it could possibly be considered to be anything other than Type AC, and therefore if a Type A RCD was required then this device won't meet that requirement.

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  • As with Chris Pearson's reply, I don't believe that you can consider a Type AC RCD to be akin to a Type A RCD simply because it tripped with an RCD tester set to Type A. I can't see how it could possibly be considered to be anything other than Type AC, and therefore if a Type A RCD was required then this device won't meet that requirement.

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