# How do I understand which of the 132 or the 230 kV grid line? ## How do I understand which of the 132 or the 230 kV grid line?

One question for many is how do I understand which one is 132 or which is a 230-kilowatt grid line ???

The answer is very simple. Today I will share with you a technique. From the moment you see the power grid tower, you can understand how many volts there are.

• First of all, the larger the insulator size, the higher the voltage.
• Then the height of the tower is also a factor.
• There is still a formula for convincing understanding. That is,

No of insulators = KV / 11√3

Suppose the voltage of any transmission line is 132KV

So,

No. of insulators = 132/ 11√3 = 6

That is, if there are 5 insulators on the transmission line, that is a 32kV line.

Now the question is why divided with 11√3 ??

To take the Phase Voltage, the 32kV line volt is divided by root 3. And the insulators on the transmission line are suspension/strain type insulators where each insulator can withstand stress at 11KV.

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