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integrity

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High Integrity CSU on TT system.

If a High Integrity CSU where every circuit is protected by a mix of RCDs & RCBOs is connected to a TT system, is it still necessary to fit a 100mA S front end RCD?
- Geordie Spark
- Thread
- Jun 3, 2011
- aus electricians' talk integrity system tt system
- Replies: 11
- Forum: Australia
N
Hi Integrity CU

Hi all I am fitting a new Crabtree High Integrity CU tomorrow at customers premises, as it is all solid floors DS & chipboard US with glued downcarpets. I am proposing to use the redundant cooker cable (gas cooker now fitted) as a feed sub main circuit to supply the integral garage via 32A...
- Newpark7
- Thread
- Jun 14, 2009
- aus electricians' talk integrity
- Replies: 4
- Forum: Australia
T
Rcbo and high integrity earthing cop out

Would normally expect when wiring ring mains nowadays for data serving equipment to use high integrity earthing. Is the following true: If the following applies you don't have to do it: 1.Use of a Rcbo as long as the Rcbo is 30ma rated and the earth leakage current expected will not be greater...
- tomasi
- Thread
- Jun 6, 2009
- earth earthing electricians' talk integrity leakage out rcbo
- Replies: 3
- Forum: Electrical Wiring, Theories and Regulations
E
17th edition board TT system high integrity board what size RCD front End?

What size Rcd should you use as main switch for a high integrity board on a 17th installation. 16th was a 100mA type S, could you use a 300mA RCD without the delay? I understand if you use a split 17th edition board you don't need a front end RCD...
- electro
- Thread
- Jun 21, 2008
- 17th 17th edition board edition electricians' talk front integrity rcd size system tt system
- Replies: 7
- Forum: Electrical Wiring, Theories and Regulations

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