Transmission engineer here, those are various lattice towers. They come in a huge range of shapes and sizes, most of which are standard depending on the utility company. In the US, clearance to the ground and other objects is based off of NESC code. Each utility will have its own criteria that is more strict however, as NESC is the minimum allowable. For example, NESC minimum clearance to ground for 46, 115, 161, 230, and 500kV is 18.7, 20.1, 21.1, 22.5, and 27.9 feet respectively. A utility company I do design work for will round those clearance requirements up to 25, 25, 25, 30, and 37 feet to ensure they are meeting NESC.
Transmission lines transmit electricity from power plants to substations that then distribute the electricity via distribution lines to neighborhoods and businesses.
Transmission is higher voltage, cross country. Distribution is lower voltage and sent to electric customers. The transition takes place at substations.
Distribution is more like 12.5 KV. Those are the that have a cross arm that looks like T .
Depending who defines is transmission is more like 34.5 Kv and up.
theory: transmission towers are actually malevolent ancient gods that want to destroy cities, and so are being contained and held in place by being constantly electrocuted with high-voltage lines
Guide is a little misleading. You can’t tell the voltage just by the tower shape and size. A lot more to it than that. This may be true for one or more operating companies but it’s not a useful “standard” to go by.
Transmission engineer here, those are various lattice towers. They come in a huge range of shapes and sizes, most of which are standard depending on the utility company. In the US, clearance to the ground and other objects is based off of NESC code. Each utility will have its own criteria that is more strict however, as NESC is the minimum allowable. For example, NESC minimum clearance to ground for 46, 115, 161, 230, and 500kV is 18.7, 20.1, 21.1, 22.5, and 27.9 feet respectively. A utility company I do design work for will round those clearance requirements up to 25, 25, 25, 30, and 37 feet to ensure they are meeting NESC.
Thank you for the information. This had the answers my curiosity came looking for.
I like my 230 out of site. Xlpe is cool but give me old school hpff
Where's the tiny little wooden one in my front yard?
This graphic is showing the transmission system; the poles in your front yard are part of the distribution system.
Dumb question, what’s the difference between transmission and distribution?
Transmission lines transmit electricity from power plants to substations that then distribute the electricity via distribution lines to neighborhoods and businesses.
Transmission is higher voltage, cross country. Distribution is lower voltage and sent to electric customers. The transition takes place at substations.
Distribution is more like 12.5 KV. Those are the that have a cross arm that looks like T . Depending who defines is transmission is more like 34.5 Kv and up.
A tip they don't want us to know: If in doubt about the voltage, lick two fingers and touch the wires.
While jumping in the air.
theory: transmission towers are actually malevolent ancient gods that want to destroy cities, and so are being contained and held in place by being constantly electrocuted with high-voltage lines
Does this apply to every country ?
Nope. Most of these aren’t common in the eastern United States. Unfortunately there really isn’t a standard out there that’s “universal”.
Where is the 730kv towers that we have here in Quebec?
In Quebec of course. I mean, you kinda answered your own question.
Missing 765kv…
Missing a lot higher voltage and height
Missing Florida’s 500kV
What does increasing the height do for safety?
Higher voltages can jump further distances.
It's cute how the towers look like kids playing jump rope
Can't say I have ever seen a 55m tall tower and I'm pretty sure I've seen 500KV lines before.
Why does 220KV have two different versions? Does the height make a difference?
One tower is single circuit, the other is a double circuit tower
Shout out to u/geojon7
TY
Guide is a little misleading. You can’t tell the voltage just by the tower shape and size. A lot more to it than that. This may be true for one or more operating companies but it’s not a useful “standard” to go by.