HIi guys,
Had a call out to a property today and looking for a bit of advice. As stated the RCD trips whenever the immersion heater kicks in.
I have disconnected the incoming cables and Insulation Resistance tested them and they come out >200MOhms which is all good.
The element is a Theeta WT7 and the RCD trips whenever this reaches set temperature.
When i disconnect the earth from the immersion it holds and when I link through the element it holds. It's only when I introduce an earth that the RCD trips.
Am I missing something really obvious? Or is there something I've failed to do? I hoped it'd just be the element but the problem occurs when it's been linked through which is bugging me.
I want to be able to say I've taken it as far as possible until the plumber is back from faking sickness!!
I've tried to attach some pics of the issue.
Had a call out to a property today and looking for a bit of advice. As stated the RCD trips whenever the immersion heater kicks in.
I have disconnected the incoming cables and Insulation Resistance tested them and they come out >200MOhms which is all good.
The element is a Theeta WT7 and the RCD trips whenever this reaches set temperature.
When i disconnect the earth from the immersion it holds and when I link through the element it holds. It's only when I introduce an earth that the RCD trips.
Am I missing something really obvious? Or is there something I've failed to do? I hoped it'd just be the element but the problem occurs when it's been linked through which is bugging me.
I want to be able to say I've taken it as far as possible until the plumber is back from faking sickness!!
I've tried to attach some pics of the issue.