RCD or RCBO consumer unit

<div class="bbWrapper">Hi .<br /> <br /> I normally do industrial electric work.<br /> Usually on Schneider and Merlin Gerin boards<br /> <br /> I am looking at fitting a new consumer unit at home and seem to be getting two versions of which board would suit best.<br /> <br /> Either a dule RCD board with MCBs <br /> Or A board with all RCBOs.<br /> <br /> Which would be best and why?</div>

<div class="bbWrapper">Rcbo board anytime,keeps faults separate and you don&#039;t need to worry about the 9ma leakage current limit on any 1 rcd. I only fit full rcbo boards with spd for single phase</div>

<div class="bbWrapper"><blockquote data-attributes="member: 41295" data-quote="newfutile" data-source="post: 1878788" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1878788" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1878788">newfutile said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Rcbo board anytime,keeps faults separate and you don&#039;t need to worry about the 9ma leakage current limit on any 1 rcd. I only fit full rcbo boards with spd for single phase </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Thanks.<br /> Any recommendations on type.<br /> <br /> I usually fit Schneider stuff and I can find one with the right RCBOs I need but will consider other if any are recommend as better.</div>

<div class="bbWrapper"><blockquote data-attributes="member: 122574" data-quote="Fazz711" data-source="post: 1878789" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1878789" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1878789">Fazz711 said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Thanks.<br /> Any recommendations on type.<br /> <br /> I usually fit Schneider stuff and I can find one with the right RCBOs I need but will consider other if any are recommend as better. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>What do you mean by &#039;better&#039;</div>

<div class="bbWrapper">Hager or Fusebox….. or whatever I get the best price on. <br /> <br /> <br /> As explained above, all RCBO gives better separation of circuits the dual RCD, losing only one circuit instead of a bunch of them. <br /> Possible nuisance trips are harder to diagnose. <br /> <br /> Only downside is the increased initial cost. <br /> <br /> <br /> What’s the physical location like for space to fit in a new board? <br /> All mine seem to include destroying some well built cupboard surround, <img src="https://cdn.jsdelivr.net/gh/twitter/[email protected]/assets/72x72/1f609.png" class="smilie smilie--emoji" loading="lazy" width="72" height="72" alt=";)" title="Wink ;)" data-smilie="2"data-shortname=";)" /> <img src="https://cdn.jsdelivr.net/gh/twitter/[email protected]/assets/72x72/1f600.png" class="smilie smilie--emoji" loading="lazy" width="72" height="72" alt=":D" title="Big Grin :D" data-smilie="8"data-shortname=":D" /></div>

<div class="bbWrapper"><blockquote data-attributes="member: 103809" data-quote="littlespark" data-source="post: 1878791" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1878791" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1878791">littlespark said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Hager or Fusebox….. or whatever I get the best price on.<br /> <br /> <br /> As explained above, all RCBO gives better separation of circuits the dual RCD, losing only one circuit instead of a bunch of them. <br /> Possible nuisance trips are harder to diagnose.<br /> <br /> Only downside is the increased initial cost.<br /> <br /> <br /> What’s the physical location like for space to fit in a new board?<br /> All mine seem to include destroying some well built cupboard surround, <img src="https://cdn.jsdelivr.net/gh/twitter/[email protected]/assets/72x72/1f609.png" class="smilie smilie--emoji" loading="lazy" width="72" height="72" alt=";)" title="Wink ;)" data-smilie="2"data-shortname=";)" /> <img src="https://cdn.jsdelivr.net/gh/twitter/[email protected]/assets/72x72/1f600.png" class="smilie smilie--emoji" loading="lazy" width="72" height="72" alt=":D" title="Big Grin :D" data-smilie="8"data-shortname=":D" /> </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>It lives above kitchen cupboard.<br /> I was going to box it in when I fitted the kitchen but it didn&#039;t happen.<br /> Glad now as plenty of room.</div>

<div class="bbWrapper">RCBOs can help with the space problem. Going from dual RCD to RCBOs releases four modules on the DIN rail, which may allow you to go down a size in enclosure.</div>

<div class="bbWrapper"><blockquote data-attributes="member: 122574" data-quote="Fazz711" data-source="post: 1878802" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1878802" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1878802">Fazz711 said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> It lives above kitchen cupboard.<br /> I was going to box it in when I fitted the kitchen but it didn&#039;t happen.<br /> Glad now as plenty of room. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>That doesnt sound like its easily accessible for swapping out.<br /> <br /> Be prepared to take the cupboard down to give you some more working space.</div>

<div class="bbWrapper">This is the space</div>

<div class="bbWrapper"><blockquote data-attributes="member: 99413" data-quote="brianmoooore" data-source="post: 1878803" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1878803" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1878803">brianmoooore said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> RCBOs can help with the space problem. Going from dual RCD to RCBOs releases four modules on the DIN rail, which may allow you to go down a size in enclosure. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>I have eight RCDs and only use seven.<br /> <br /> The Schneider one I think is 12 and comes with eight RCBOs and will cover what I need</div>

<div class="bbWrapper"><blockquote data-attributes="member: 149787" data-quote="Tom256" data-source="post: 1878790" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1878790" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1878790">Tom256 said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> What do you mean by &#039;better&#039; </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Maybe easier to fit or cheaper more available parts <br /> Better quality.</div>

<div class="bbWrapper">You don&#039;t appear to be limited in space horizontally, as is often the case, so my comment isn&#039;t really applicable here.<br /> Is that meter as your supplier left it?</div>

<div class="bbWrapper"><blockquote data-attributes="member: 99413" data-quote="brianmoooore" data-source="post: 1878839" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=1878839" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-1878839">brianmoooore said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> You don&#039;t appear to be limited in space horizontally, as is often the case, so my comment isn&#039;t really applicable here.<br /> Is that meter as your supplier left it? </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>No I had the twist it when I fitted the kitchen</div>