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<blockquote data-quote="Geoff1946" data-source="post: 476379" data-attributes="member: 28452"><p>As suggested, the MCB itself may have given up. I still think the inrush from 12 LED drivers could be damaging.</p><p></p><p><strong>I'm assuming you are sufficiently knowledgeable / competent to undertake fault finding!</strong></p><p></p><p>Remove the output wire from the MCB and see if it will reset now. If it does, it's probably OK.</p><p></p><p>If it trips when re-connected, but with the light switch OFF then you have a short somewhere in the control circuit, ie the contactor, photocell or switch itself. - it can't be the lamps or their wiring if they are controlled via the contactor.</p></blockquote><p></p>
[QUOTE="Geoff1946, post: 476379, member: 28452"] As suggested, the MCB itself may have given up. I still think the inrush from 12 LED drivers could be damaging. [B]I'm assuming you are sufficiently knowledgeable / competent to undertake fault finding![/B] Remove the output wire from the MCB and see if it will reset now. If it does, it's probably OK. If it trips when re-connected, but with the light switch OFF then you have a short somewhere in the control circuit, ie the contactor, photocell or switch itself. - it can't be the lamps or their wiring if they are controlled via the contactor. [/QUOTE]
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