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RCCB Overload Protection in Consumer Units by Khalid Awan is a document available to read on EtoBox.
What is RCCB Overload Protection in Consumer Units about?
The 18th edition of BS 7671 wiring regulations highlights the need to change how rated current of RCCBs and switches within consumer units are selected for overload protection. Previously, diversity factors were used to determine rated current, but regulations now state they provide no overload protection and must be protected by overcurrent devices according to manufacturer instructions. Manufacturers provide two methods: 1) Sum of downstream MCBs cannot exceed switch/RCCB rating, or 2) Switch/RCCB rating
- Author
- Khalid Awan
- Language
- EN