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TP&N board

Former Community Member
Former Community Member
Hi all, what's the best sequence when installing a new TP&N board. 

1) hang on wall and then build. 

2) build and hang on wall

3) none of the above

Hate doing things twice!

Will be installing steel trunking to bring cables into DB and tails from below using steel trunking and 32mm bushes. 


​​​​​​Regards Ts. 


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  • 0
    As Alcomax says above.


    I am not an electrician but how are you going to bet your 4  3 phase tails through a 32mm bush?


    As Alcomax above says a header trunking above the DB but I would add a piece of paxaolin board between the header and the DB with the slot in the paxolin slightly smaller than the opening in the DB to protect the conductors entering the board. Also if you bolt the header straight on to the board you will not be able to put the lid on without cutting the lip of the lid away. Rather than straight on the wall a lot of sparks put a Unistrut frame on the wall and bolt to that. Mount the empty board, perhaps just the incomer isolator fitted. fit the MCBs/RCBOs, then put the ends away one at a time after testing each one. 


    Just out of interest when you were serving your time did you not watch/do a similar installation?
Reply
  • 0
    As Alcomax says above.


    I am not an electrician but how are you going to bet your 4  3 phase tails through a 32mm bush?


    As Alcomax above says a header trunking above the DB but I would add a piece of paxaolin board between the header and the DB with the slot in the paxolin slightly smaller than the opening in the DB to protect the conductors entering the board. Also if you bolt the header straight on to the board you will not be able to put the lid on without cutting the lip of the lid away. Rather than straight on the wall a lot of sparks put a Unistrut frame on the wall and bolt to that. Mount the empty board, perhaps just the incomer isolator fitted. fit the MCBs/RCBOs, then put the ends away one at a time after testing each one. 


    Just out of interest when you were serving your time did you not watch/do a similar installation?
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