pscc

[just add water sparks]

Just started back testing after 3mths install work,its easy to forget things after a break.On the last pir we did 3 phase pscc was noted on meter then this measure was doubled and put on test sheet(as it was 3 phase) Now starting on this job the guy in charge does not double this measurement and i was going through all my test and insp. & n.i.c.e.i.c books to find this !!!!!!! I KNEW i had read this somewhere, could not find it in any n.i.c.i.c books but then EUREKA found quotation in the amicus guide to inspection & testing.Out of interest how do you guys record it??????? which is right or wrong

 

[tuckermot]

double the psc for the highest phase ( line recorded )

Rich

 

[Sintra]

The doubled value is the value to be recorded.

Depending on your test equipment a 3 phase fault current can be tested directly to give correct value as opposed to the rule of thumb method.

 

[acat]

Page 52 GN 3 states as a rule of thumb approximatley twice the single phase.

Chris

 

[just add water sparks]

Many thanks all you guys