C Chr!s Well-known member Joined Nov 13, 2012 Messages 491 Reaction score -1 Location Here Mar 15, 2011 #1 What the maximum ZS for a circuit supplied via a 300 mA RCD, any ideas Cheers
Manator ©Honorary Essex Boy™ Joined May 10, 2010 Messages 4,776 Reaction score 4 Location Lancashire Mar 15, 2011 #2 Is this an exam question?
D Doc Hudson Well-known member Joined Oct 21, 2008 Messages 5,619 Reaction score 230 Mar 15, 2011 #3 Wouldn't we need to know the overcurrent protection device and earthing arrangement? Doc H.
m4tty Scaredy cat™ Supporting Member Joined Feb 5, 2009 Messages 5,612 Reaction score 1 Mar 15, 2011 #4 230v / 0.3a = 766.67ohmz. ---------- Post Auto-Merged at 20:48 ---------- Previous post was made at 20:47 ---------- Could be wrong tho but thats my guess?
230v / 0.3a = 766.67ohmz. ---------- Post Auto-Merged at 20:48 ---------- Previous post was made at 20:47 ---------- Could be wrong tho but thats my guess?
Andy™ ©Resident Geordie™ Supporting Member Joined Jan 1, 2009 Messages 30,704 Reaction score 1,414 Location S. Tyneside Mar 15, 2011 #5 230v / 0.3a = 766.67ohmz.---------- Post Auto-Merged at 20:48 ---------- Previous post was made at 20:47 ---------- Could be wrong tho but thats my guess? Click to expand... you need to use touch voltage of 50v. not 230v
230v / 0.3a = 766.67ohmz.---------- Post Auto-Merged at 20:48 ---------- Previous post was made at 20:47 ---------- Could be wrong tho but thats my guess? Click to expand... you need to use touch voltage of 50v. not 230v
sprocketflup BDSM SUB & SWAGFAG™ Supporting Member Joined Nov 11, 2010 Messages 2,659 Reaction score 16 Location Wonderland Mar 15, 2011 #6 Dont you take the max Zs value from the next device back in the circuit?
A ADS Senior Member Joined Dec 15, 2009 Messages 930 Reaction score 0 Mar 15, 2011 #7 [quote name='Andy