Can someone explain the difference between PSC and Earth loop current taken at the dis board.
PSC & Earth Loop
- Thread starter markymark2406
- Start date
PSCC is the maximum current which can flow in a fault between live conductors i.e. phase-neutral or phase-phase, PEFC is phase to earth fault current which can be given by Uoc/Ze, the PFC is the greater of the current values.
can you explain further and the earthloop
yes im learning to test with a colleage at a NHS hospital, i want to know as much as possable is there a book?
GN3?
OSG?
Electricians Guide?
Be aware that hospitals are probably not the most straighforward of places, I know that some areas use localised IT systems. Might also find things like restrictive conductive locations (special location), why don't you ask your workmate to explain it to you? or you just looking for an alternative way of phrasing things?
OSG?
Electricians Guide?
Be aware that hospitals are probably not the most straighforward of places, I know that some areas use localised IT systems. Might also find things like restrictive conductive locations (special location), why don't you ask your workmate to explain it to you? or you just looking for an alternative way of phrasing things?
I work at the a NHS hospital in a electrical workshop, im fully aware of the problems which are around with the hospital, just need to know everything poss about testing?
Can your college recommend any books? The Hospitals will have some special locations which are not described in the IEE regs which are a specialised subject (i.e. operating theatres) and need special consideration, therefore special testing procedures outside the normal practices may need to be put in place.
in hospitals you have to consider whether testing the earth loop is more important than switching the life support machine off!
the difference is that the "psc" measures the amount of short circuit current that could become present under extreme fault conditions and is measured in amps
the "earth loop" reading measures the resistance of the earth loop path ie phase and earth from the distribution board to transformer and is measured in ohms
the "earth loop" reading measures the resistance of the earth loop path ie phase and earth from the distribution board to transformer and is measured in ohms
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