Periodic Inspection Query

[Sav]

Hello people,
Hope everyone is well and busy !!

Just a quickie ( Oooh er missus )

I am going to do a periodic on a flat on Friday. The main incoming supply is a TNC-S supply and 3 phase supply.

Now on the cert, would you put down as number and type of live conductors 3-phase (2 wire) ??
And for "Characteristics of primary supply overcurrent protection device(s)", would I be correct in writing down BS1361 type 1 100a, as this is the fuse supplying power to the flat I am testing.

From there it goes into a Wylex 60a isolator and then approx 10m into the flat c/u. I know about doing the Zdb for the distribution circuit etc, its just the 1st part I get confused about.

Thanks for your help in advance,
Sav

 

[cagedanimal2010]

3 phase 4 wire, type II b 100A

 

[trix]

Is it a 60a isolator,,, or 60A switched fuse ??

 

[Doug]

Although it is a three phase supply to the block, I presume that only one phase is used for the supply to your customer's flat through a single phase meter. In this case I would put single phase, 2 wire on the cert. I would only record it as 3 phase it the customer is actually provided with a 3 phase supply, i.e. they have a 3 phase meter.