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Do-It-Yourself (DIY) Question & Answer Forum
RCBO mixed with MCBs
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<blockquote data-quote="peka1977" data-source="post: 549481" data-attributes="member: 35504"><p>I have an outdoor CU with an RCD main switch and 4 x MCBs.</p><p>Two of the MCBs control in-ground lights and the two remaining MCBs control an electric gate and a set of smart switches.</p><p></p><p>After many years of solid operation the RCD has started to trip all the time.</p><p>It looks like the light circuits have developed an earth/neutral fault and completely disconnecting them (live and neutral) has allowed the two remaining circuits to operate normally.</p><p></p><p>There are 25 lights in total, and whilst I check them all, I would love to have a system where the gate and smart switches are not continually powered off.</p><p></p><p>How can I get the light circuits to trip individually without disrupting the other circuits?</p><p>Can I just exchange their respective MCBs for RCBOs?</p><p>Unfortunately there is not enough room in the CU to add an RCD just for the light circuits. </p><p>Thanks</p></blockquote><p></p>
[QUOTE="peka1977, post: 549481, member: 35504"] I have an outdoor CU with an RCD main switch and 4 x MCBs. Two of the MCBs control in-ground lights and the two remaining MCBs control an electric gate and a set of smart switches. After many years of solid operation the RCD has started to trip all the time. It looks like the light circuits have developed an earth/neutral fault and completely disconnecting them (live and neutral) has allowed the two remaining circuits to operate normally. There are 25 lights in total, and whilst I check them all, I would love to have a system where the gate and smart switches are not continually powered off. How can I get the light circuits to trip individually without disrupting the other circuits? Can I just exchange their respective MCBs for RCBOs? Unfortunately there is not enough room in the CU to add an RCD just for the light circuits. Thanks [/QUOTE]
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RCBO mixed with MCBs
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