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AFDD protection to comms cabinet in HRRB

Is AFDD protection required to BS EN 60309 socket circuit serving landlords CNS comms cabinet in HRRB? The building is multi residential with commercial amenities. If so does BS 7671 permit similar approach for RCD to omit on grounds of nuisance tripping? 

Parents
  • Hagar sell one Arc Fault Detection Device only no (RCD) Residual Current Device I think it's the arm920u 

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  • Hagar sell one Arc Fault Detection Device only no (RCD) Residual Current Device I think it's the arm920u 

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