In a ring circuit can the length of spurs be additional to the 50m maximum for the ring, or do all the spur lengths have to be counted as part of the 50m maximum?
In a ring circuit, in order to determine the safe length for any one spur cable does the voltage drop have to be calculated individually for each separate spur (taking the resistance of the ring itself into account, but not other spurs)?
Is the resistance of all the spurs in a ring circuit discounted when calculating the voltage drop in the ring itself; but the resistance of the ring (but not of any of the other spurs) taken into account in determining the voltage drop at the end of each single spur in turn?
In an existing ring circuit can extra spurs still be added by inserting (accessible) junction boxes, instead of inserting a socket in the ring? My 1908 house was re-wired with junction boxes serving a spur supporting a second spur, which I want to amend.
In a ring circuit, in order to determine the safe length for any one spur cable does the voltage drop have to be calculated individually for each separate spur (taking the resistance of the ring itself into account, but not other spurs)?
Is the resistance of all the spurs in a ring circuit discounted when calculating the voltage drop in the ring itself; but the resistance of the ring (but not of any of the other spurs) taken into account in determining the voltage drop at the end of each single spur in turn?
In an existing ring circuit can extra spurs still be added by inserting (accessible) junction boxes, instead of inserting a socket in the ring? My 1908 house was re-wired with junction boxes serving a spur supporting a second spur, which I want to amend.