DonkeyDong
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- Mar 14, 2008
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All,
Currently I have DB1 split load, feeding DB3 (which is 30mA split load) via a submain (DB3 is an external building) with exported PME - not ideal.
I need to insert a new DB (DB2) in between DB1 and DB3. I intented to not use exported PME and switch to TT on DB2.
So basically, DB1 non RCD side via submain to DB2. DB2 will need to have a 100mA RCD (due to TT). This will then feed via a breaker to DB3 (which has 30mA RCD fitted) - which means DB2 100mA will now need to be type S to provide discrimination.
Eventually there will be DB4 (fed from DB2).
Any comments relating to the above ?
D.
Currently I have DB1 split load, feeding DB3 (which is 30mA split load) via a submain (DB3 is an external building) with exported PME - not ideal.
I need to insert a new DB (DB2) in between DB1 and DB3. I intented to not use exported PME and switch to TT on DB2.
So basically, DB1 non RCD side via submain to DB2. DB2 will need to have a 100mA RCD (due to TT). This will then feed via a breaker to DB3 (which has 30mA RCD fitted) - which means DB2 100mA will now need to be type S to provide discrimination.
Eventually there will be DB4 (fed from DB2).
Any comments relating to the above ?
D.