19.1ka psc reading on a 2 bed small house!

[ch1cki]

Any ideas??

 

[ch1cki]

Pefc.....!

 

[Guest 004]

I am sure the final circuits would be more than 0.04 ohm Zs, giving 5.75Ka psc, in which most domestic mcbs would stop the fault current, even if you had a socket/spur directly at the board.

 

[topquark]

OK, hands up, who's smoking something and who isn't?

 

[Guest 004]

But how would that make any difference to PSSC?

loosen the neutral terminal ..........lol

 

[Guest 004]

loosen the neutral terminal ..........lol

oh and i forgot to mention, bang in a neutral rod

sorry its been a long day, and I am in need of some entertainment

 

[Guest 004]

OK, hands up, who's smoking something and who isn't?

smokin kronenberg

 

[topquark]

oh and i forgot to mention, bang in a neutral rod

sorry its been a long day, and I am in need of some entertainment

I was thinking more of a proton rod to balance the electrons out.

 

[ch1cki]

I meant pefc not psc, sorry, my bad

 

[IQ Electrical]

Pefc.....!

Come on Ben, you measure PEFC and PSSC and record the higher value as PFC so what will an earth rod do?

 

[ch1cki]

PEFC was the higher value i would just like to know how to bring them down?

 

[topquark]

Think about it, if you reduce the resistance what will happen to the current if the voltage stays constant?

 

[Guest 004]

PEFC was the higher value i would just like to know how to bring them down?

basically you cant, you will need to install the relevant switchgear/fuses

with PEFC that high PSSC will not be far behind

 

[ch1cki]

like how?

 

[topquark]

Is this making sense Ben?

 

[topquark]

like how?

What are you struggling with?

If you were to add an earth rod (as you'd suggested) the earth fault loop would lower in resistance so a higher current could flow. The only option is (apart from making the earth fault loop higher resistance (within allowable limits) is to upgrade the switchgear to cope with the higher load potential.