rcbo ?

Richard3009 · Jan 22, 2009

Use of RCBO,s ?

Am I correct in thinking these are primarily for use where you want an individual circuit to be rcd protected but you do not want that circuit affected by other circuits tripping the batch rcd.

So modern boards give split load via 2 rcds and the couple of ways fed direct from the main switch isolator are for RCBOS for such circuits as mentioned above,

slocm3105 · Jan 22, 2009

Spot on my friend, you can even use standard MCB's off the main switch if the circuits comply with the regs not needing RCD protection

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Tiger · Jan 22, 2009

Richard3009 said:
Use of RCBO,s ?

Am I correct in thinking these are primarily for use where you want an individual circuit to be rcd protected but you do not want that circuit affected by other circuits tripping the batch rcd.

So modern boards give split load via 2 rcds and the couple of ways fed direct from the main switch isolator are for RCBOS for such circuits as mentioned above,

Yes also to protect a new circuit you have worked on without upgrading all the other circuits when the customer won't part with the money

Richard3009 · Jan 22, 2009

I wish college lecturers could explain it this way, I had a full afternoon on this you have never heard a classroom debate like it,

salisbury spark · Jan 22, 2009

My College lecturer is a 15th guy teaching the 2330yr2 to the 17th ed. -We end up having to correct him, and hes the teacher...... Interesting earlier post on Rcbos and they that only disconnect the line and not the other 'live' -neutral. Worth a look for more comments.

spamwize2 · Jan 22, 2009

hi dont forget new regs all circuits in bathrooms have to be protected by rcd/rcbo lights and power

Spudnik · Jan 22, 2009

spamwize2 said:
hi dont forget new regs all circuits in bathrooms have to be protected by rcd/rcbo lights and power

Same goes for any circuit worked on really.

Except repair or replacement of course.

However, if doing a CU change then filling it with RCBO's can work out quite expensive.