How to effectively install a stay on a pole
Hi guys. Welcome to electrical tutorials. Today we’ll be looking at how you can successfully install a stay on a line. To install a stay, you need all the materials that make up the stay assembly. These materials were listed in electrical overhead line materials and functions.
Nonetheless, let’s look at a recap of the materials that make up stay assembly.
- Stay rod
- Stay bolt
- Stay drum
- Stay wire
- Stay insulator
- Stay block
- Stay plate
This is placed into the hole dug. The stay block is usually placed on the stay drum
Stay block is buried into the ground on the stay drum. It acts to hold the whole assembly together
Usually placed on the stay block.
These are used to connect the stay wire to the stay block beneath the ground.
Stay wire is used to tension the whole stay assembly. In between, a stay insulator is used to sectionalize the stay wire.
This is used to sectionalize the stay wire from the top and below in case of leakage current from the top. It is also called stay guy insulator.
This is used to hold the stay wire to the pole at the top.
Steps to effectively install a stay on a line
To install a stay, the stay block must be buried at least 6ft below the ground so that when the stay wire is tensioned, the whole stay assembly will have a firm grip on the ground and will be able to cancel out the resultant forces on a pole.
The stay insulator helps to insulate the stay by creating a barrier on the stay wire.
This helps to take care of any leakage or fault current that gets to the stay wire tied to the upper end of the pole.
Failure to attach the stay insulator will provide a path for such leakage or fault current to pass through the entire stay assembly to the earth.
Remember, we are staying not earthing.
The stay wire is not supposed to come in contact with the overhead line.
Hence, the line will be automatically grounded i.e L-G fault.
Also, it is not uncommon to see children touching stay wires every now and then.
In case of such a fault, the children will be electrocuted.
Electrical overhead line materials and functions (33kv and 11kv)
Abimbola Olagunju says
Thank you for this refresher tutorial