What is Wrong with this Test Sheet?

[Paul.M]

I'm going to post up the worst schedule of test results you will ever see! Build it up bit by bit and discuss the things that are wrong with it. Here is the first part, 3 things wrong on it (apart form the date, thats just me messing about).




Post up what you think is incorrect and why. I'll add another part to this schedule of test results later in the week.

 

[amckay]

Its a 1.5mm cable protected by 32a breaker. 32a breaker will not be sufficient to protect the cable. Fire hazard.

 

[amckay]

Breaking capacity exceeds ipf?

 

[Paul.M]

Its a 1.5mm cable protected by 32a breaker. 32a breaker will not be sufficient to protect the cable. Fire hazard.

Half way there mate. 1.5mm RFC????

Breaking capacity exceeds ipf?

Erm... no.... May need to do the calcs on this one? We have the Ze, the ipf @230V nominal Voltage. Why is it wrong on the test sheet??

 

[amckay]

Ah you said the test sheet not the install lol. Yes the rfc should be 2.5mm cable on a 32a breaker.

 

[lurchio]

Cable size, 2.5mm min for 32A breaker if a ring. 20A if a radial

 

[Paul.M]

Ah you said the test sheet not the install lol. Yes the rfc should be 2.5mm cable.

Ok you've got me on the tittle lol, you know what I mean.

Can we have a socket RFC on 1.5mm t&e?? Where does it say that?

 

[lurchio]

IPF should be 1.3kA?

 

[amckay]

If its one outlet on a radial yes. Going off a 1.5mm's cable current carrying capacity.

 

[Paul.M]

IPF should be 1.3kA?

1.3kA rounded up or 1278A.

230V / 0.18 so the 4.7kA on the sheet is wrong. Well done.

 

[Simonslimline]

Continuity of RFC conductors?

Is the Ipf the PSCC?

1.5mm2 on 32A?

 

[Paul.M]

Continuity of RFC conductors?

We have not got that far yet.

Is the Ipf the PSCC?

Yes.

1.5mm2 on 32A?

1.5mm on a 32A RFC, that is the question???

 

[Simonslimline]

Im confused now mate, is the IPF wrong or is it the PSCC reading? which would make the Zdb of 0.18 irrelevant to the recorded 4.7Ka.

Does the 1.5mm2 require OL protection or due to the nature of the connected loads is just fault protection required?

 

[Paul.M]

The Ze has been measured and by the looks of it, the PFC/Ipf has been made up. The calcs dont add up.

 

[Simonslimline]

Ok cool, 230/0.18 = 1278A

Just wondered if maybe it was the PSCC reading as it could be higher than the 1278A PEFC. Phase sequence not applicable though so doubt it would be that high.

1.5mm2 is not suitable on a 32A (unless it was MICC perhaps)