W
wattsy
Evening all
Hopeully someone can help me get my head around this.
I'm looking at table 7.1 OSG. For the 1361/3036 45A radials on a TN-S system the limiting factor is sc, which means its limited by the line to neutral loop impedance (short circuit). But the TNC-S it isn't. Can't see what the difference between L - N fault on TNC-S and TN-S?
Can somebody please explain this to me in detail please i'm confused
Many Thanks
Hopeully someone can help me get my head around this.
I'm looking at table 7.1 OSG. For the 1361/3036 45A radials on a TN-S system the limiting factor is sc, which means its limited by the line to neutral loop impedance (short circuit). But the TNC-S it isn't. Can't see what the difference between L - N fault on TNC-S and TN-S?
Can somebody please explain this to me in detail please i'm confused
Many Thanks