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Connecting a PV systems the right way
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<blockquote data-quote="Barx" data-source="post: 425267" data-attributes="member: 121"><p>We have all heard and most have seen how NOT to connect PV. I know a few things about PV but here I sit starting to doubt myself. All the PV we have installed to date, we have done a fashion that does not require RCD protection (quite easy to achieve retro-fit). My thoughts, and the regs thoughts, say to use a B Type RCD..... Have you tried to get hold one?</p><p></p><p>Wholsalers....... Nope, never sold them</p><p></p><p>T'internet......... Struggle to find anyone dealing in them.</p><p></p><p>So, my question for this thread is, how do people fit PV properly when RCD is needed? i,e new build, re-wire, etc.</p><p></p><p>I have seen many installs using garage boards and AC type RCD, to me this is wrong. Wylex seem to offer some PV switchgear and they state that the unit can come with an DP RCBO but nowhere does it say it is a B Type and searching the t'internet return nothing for wylex b type DP rcbo.</p><p></p><p>Now, I have seen some inverter manufacturers state that an A type RCD will suffice as DC can only leak from +ve OR -ve giving the pulsing DC not constant. A lot of RCBO's are A Type, but I wouldn't like to hold this up in court.</p><p></p><p>So, without bashing me sensless with a stick, What configurations have you seen in real life that you deem right?</p><p></p><p>Answers on a postcard (or just reply to the thread)</p><p></p><p>Ta</p></blockquote><p></p>
[QUOTE="Barx, post: 425267, member: 121"] We have all heard and most have seen how NOT to connect PV. I know a few things about PV but here I sit starting to doubt myself. All the PV we have installed to date, we have done a fashion that does not require RCD protection (quite easy to achieve retro-fit). My thoughts, and the regs thoughts, say to use a B Type RCD..... Have you tried to get hold one? Wholsalers....... Nope, never sold them T'internet......... Struggle to find anyone dealing in them. So, my question for this thread is, how do people fit PV properly when RCD is needed? i,e new build, re-wire, etc. I have seen many installs using garage boards and AC type RCD, to me this is wrong. Wylex seem to offer some PV switchgear and they state that the unit can come with an DP RCBO but nowhere does it say it is a B Type and searching the t'internet return nothing for wylex b type DP rcbo. Now, I have seen some inverter manufacturers state that an A type RCD will suffice as DC can only leak from +ve OR -ve giving the pulsing DC not constant. A lot of RCBO's are A Type, but I wouldn't like to hold this up in court. So, without bashing me sensless with a stick, What configurations have you seen in real life that you deem right? Answers on a postcard (or just reply to the thread) Ta [/QUOTE]
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