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Hello,
New trainee electrician so sorry if this is a dumb question I feel confident with calculating the volt drop for a ring and radial circuit but am getting confused when in comes to incorporating a spur and and just wanted some help to confirm if I am calculating the volt drop at a fuse spur correctly or not. The ring is approximately 17.2M and there are 3 13A fuse spurs totalling 0.6M each in length (not included in length calculation for ring)
I have calculated the volt drop of my ring without the 13A spurs as followed...
Is this the correct way of calculating the volt drop of the spur by adding the volt drop of the ring to the volt drop of the cable to the spur = 4.13V?
New trainee electrician so sorry if this is a dumb question I feel confident with calculating the volt drop for a ring and radial circuit but am getting confused when in comes to incorporating a spur and and just wanted some help to confirm if I am calculating the volt drop at a fuse spur correctly or not. The ring is approximately 17.2M and there are 3 13A fuse spurs totalling 0.6M each in length (not included in length calculation for ring)
I have calculated the volt drop of my ring without the 13A spurs as followed...
Length – L | Mv/A/m | Volt Drop (Ring) | Max Volt Drop |
17.2M | 18 | 18 x 32 x 17.2 / 4 x 1000 = 3.99V | 5% (11.5V) |
Length – L (Spur) | Mv/A/m | Volt Drop (Spur) | Max Volt Drop |
0.6 | 18 | 18 x 13 x 0.6 / 1000 = 0.14V | 5% (11.5V) |
Is this the correct way of calculating the volt drop of the spur by adding the volt drop of the ring to the volt drop of the cable to the spur = 4.13V?