Testing 110v/ac and Filling in EIC forms and max fault currents

[wyhc]

Hi all

I am currently testing a lot of 110v/ac circuits. These are fed from a db which is supplied by a 110v transformer. the MCB's are double pole 6a 60947 schnieder.
My questions are: 1. What is the max zs for the device? 2. do I need to put anything special on the eic forms

Thanks

 

[Knobhead]

What research have you done in to the situation so far?

 

[Sintra]

There are tables in bs7671 that will give you max Zs for 110V circuits or you could always calculate it.

 

[wyhc]

What research have you done in to the situation so far?

I have got 110v readings for 60898's but I'm struggling to find anything for the double pole type 60947. Its not something I have ever had t do before and I'm not sure where to start. I had a look at the technical data for the schnieder stuff but either I have missed it or its not there.

Cheers

 

[Brightspark2]

Max ZS for 60947 needs to obtained from the manufacturer...

 

[Bobster]

Is this transformer feeding at 55v a leg? If so you will be looking at different values.