Wednesday February 8 2012
Science Photo of the Day

Pic222

What is the purpose of those things that look like trash cans that hang on power poles?

Excellent! The device is a step down transformer, converting the high voltage electricity from the wires into low voltage power for our homes. Because the high voltage feeds in from the lines, occasionally a squirrel will touch both wires, producing a loud bang, a loss of electrical power, and little bits of fried squirrel to come floating down to the ground.

vom

Good day, Mr. Krampf.

Trash cans?! Those are not trash cans, they are protective coverings for very powerful high voltage wires. They are kept inside of the container so birds are not electrocuted and the power does not go out. This is our theory of why those "trash cans" are covering the wires.

Thank you for another spectacular picture.

In reply to the photo and Vicky

To Mr. Krampf: I think it is a transformer which lowers the voltage of the electricity passing by through the wires, and to Vicky: What do you mean it blows people up?

Sincerely,
Tobias

Toilets

They are specially designed for very very tall dogs that do not want to use the lamp post - (Sing together) shine a light... shine a light..... shine a light on me - down rover --- Next

It's a transformer! Although

It's a transformer!

Although this one is pretty big, there are several transformers that are smaller that we pass by in our everyday life. This one looks like a single phase.

vicky bennett england

stores electricity until it gets used
blows people up

Mrs. Webber's class response

Good day, Mr. Krampf.

Trash cans?! Those are not trash cans, they are protective coverings for very powerful high voltage wires. They are kept inside of the container so birds are not electrocuted and the power does not go out. This is our theory of why those "trash cans" are covering the wires.

Thank you for another spectacular picture.

Your happy scientists,
Mrs. Webber's 4th Grade Class

'trash cans'

Arnt they the transformers? That change the voltage of the electricity.

According to your video, it

According to your video, it is a transformer that "transforms" the power down to a level we can use in our houses.

Mr. Miller's 5th grade class

the answer

there are power lines in it

to make light

to make light

pole-mounted transformer

This is a pole-mounted transformer and they reduced the electricity or your house would be fried. (Abbie)

Regular power lines have 7200-14400 volts and this must be reduced to 240/120 volts that we use in our homes.

We found a nice site explaining this: http://www.powertransformer.us/polemountedtransformers.htm

Power Pole Canisters

I Believe they are part of the generators the make the electric current flow. If there was only one for a whole long stretch of road the current would be too weak I would think. So each of those helps generate more power.
L. Albers

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