W
Woodbeare1
Hi there can I describe an installation and I would love to hear some opinions as to weather the earthing is up to standard. Its quite a long run so I'm concerned about the difference between true earth and system earth!
Submain comes direct from meter cupboard in farmhouse through 100a main switch and 63a mcb
Sub main is 25mm2 swa 3 core using the 3rd core as cpc (also bonded to swa outer protection) it runs as follows
25m to adaptable box two CUs for cottage and workshop
Another 25m now goes on from the box to a 2nd shed with a AB and garage unit
From here it goes another 45m but reduces to 16mm2 swa 3 core to a barn with another AB and Garage unit
Here it reduces again to 10mm2 swa 3 core and goes through a 63a rotary isolator before running another 50m to the last shed.
I'm now about 150m from the meter cupboard and although the earth is sizeable I'm along way from the PME supply, should I be putting in earthing rods on a pme system??
Any help and constructive abuse greatly welcomed!!
Submain comes direct from meter cupboard in farmhouse through 100a main switch and 63a mcb
Sub main is 25mm2 swa 3 core using the 3rd core as cpc (also bonded to swa outer protection) it runs as follows
25m to adaptable box two CUs for cottage and workshop
Another 25m now goes on from the box to a 2nd shed with a AB and garage unit
From here it goes another 45m but reduces to 16mm2 swa 3 core to a barn with another AB and Garage unit
Here it reduces again to 10mm2 swa 3 core and goes through a 63a rotary isolator before running another 50m to the last shed.
I'm now about 150m from the meter cupboard and although the earth is sizeable I'm along way from the PME supply, should I be putting in earthing rods on a pme system??
Any help and constructive abuse greatly welcomed!!