Guide to 17th Edition Consumer Units

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Smoke
Shower Sockets Lights Cooker Sockets Lights
Option 2 Split Load Twin RCCB plus Dedicated RCBO
This arrangement provides a dedicated
30mA RCBO for the smoke detector
circuit, but combines the rest of the
circuits across two further 30mA
RCCB’s. Careful arrangements of the
circuits can reduce the likelihood of
nuisance tripping, thereby limiting the
inconvenience or potential hazards that a
loss of supply can cause by limiting the
number of circuits affected.
Guide to | 17th Edition Consumer Units 16
“This arrangement provides a dedicated
RCBO for the smoke detector circuit”