MCB

That would depend entirely upon the national wiring code that is applicable in the country of installation.

If in doubt, consult a qualified Electrician in that country.

What PWSlack said.

"Which wire to use in this and in 60mcb"

Use the correct wire according to local codes.

It depends on some other things besides amperes alone:
>Ambient temperature
>Voltage drop in lengthy wire runs
>Grouping of this with any other conductors, in what kind of conduit, etc.
>Whether it feeds a motor
>and maybe more.

Hope this was not your last post. So when you read this:

1. engage with a certified electrician
2. have him or her look at it.
3. never ever rely on anonymous advice (even the above ones are all good) from the internet
4. If you want to do this alone, read the code, get training, make the certification

With other words: Dont use the wrong one!

I've looked at the OP's previous posts…………. I'm out of here, he's a total waste of time!

It really depends on how high off the ground you wish to jump when you short it out. Hire an electrician, and take a tea break in the meantime.

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no. 1: If L+N, one terminal for L and the other terminal for N.

no. 2: If L1+L2, one terminal for L1 and the other for L2.

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But you need to keep in mind that MCB for no. 1 and no. 2 is different.

Hope it help you.

This whole topic appears to be a short out waiting to happen. Have fun putting the smoke back in the leads once released.