110v CTE transformer wiring

mossep · Dec 15, 2014

I have 400v 2 phase to 110v CTE 10kvA transformer. It is going to supply 110v sockets in a workshop which will be used for general power tools.

I have been told by a colleague that the primary earth should be kept separate from the secondary earth when wiring the new sockets we are fitting as there could be risks in the event of a fault. I have opened up the transformer today as it has been delivered and noticed that the primary earth is connected to the secondary earth inside it. Does this sound correct, or is my colleague mistaken in what he thinks?

I have not fitted one before so any advice would be great as I have to install it tomorrow!

Thanks

Martin

guest119 · Dec 15, 2014

What colour of cores will you wire the sockets in excluding the earths?

Knobhead · Dec 16, 2014

Ask your colleague why.

I'll bet he can't come upwith a valid reason.

mossep · Dec 16, 2014

Boydy said:
What colour of cores will you wire the sockets in excluding the earths?

Pink and green, what colours would you use?

Deleted member 9648 · Dec 16, 2014

Boydy said:
What colour of cores will you wire the sockets in excluding the earths?

Whats that got to do with the OP's question?

mossep · Dec 16, 2014

It has nothing to do with my question, it's the posters underhanded way of suggesting that by questioning the earthing arrangement means that I am probably unsure of any other aspect of 110v wiring systems. If that make the poster feel good though I hope they never have to ask for advice.

Darkwood · Dec 16, 2014

Your colleague is getting confused between different types of Tx, tell him if he's giving advice to ensure he knows what he talking about.

Leave the Tx as it has been supplied and wire as the installation intructions tell you, are you knowlwdged in the fusing of the primary side and the correct fusing arrangements for the secondary side? If not I would do some research yourself into the circuit design and avoid asking your ever so knowledged colleague. :icon12:

guest119 · Dec 16, 2014

mossep said:
It has nothing to do with my question, it's the posters underhanded way of suggesting that by questioning the earthing arrangement means that I am probably unsure of any other aspect of 110v wiring systems. If that make the poster feel good though I hope they never have to ask for advice.

It was just a simple question Moss, designed if you like to help after the resolution of your earthing question.