What are the canisters on power lines?

Lightning arrestors protect the pole and equipment from lightning strikes. The secondary wire carries the lower voltage electricity after it passes through the transformer.

What are the big cylinders on power lines?

The barrels that look like oil drums or trash cans hanging off utility poles are called transformers. They’re used to lower the amount of voltage between the primary wires and secondary lines. Without transformers, there would be lots of fried household appliances.

What are the black boxes on telephone lines?

Black boxes were devices which, when attached to home phones, allowed all incoming calls to be received without charge to the caller. The black box (as distinguished from blue boxes and red boxes) was a small electronic circuit, usually a resistor or zener diode in series with the line.

What are the cylinders hanging from power lines?

Those are splice containers that have a POSITIVE pressure inside so that the connections wont get moisture in them. A ROLL of that huge black cable comes on a 1000′ spool, so every splice is 1000 foot away UNLESS some idiot with a back hoe digs it up or a moron with a garbage truck hangs on the line and yanks it down.

What are the black cylinders on power lines?

Many cables—especially older ones—have a small cylinder on them. What does it do? First, four guesses, this time with a little help from Oprah: a) “Own your power.” The cylinders are called accumulators—they’re effectively small batteries.

What are the black cylinders on power poles?

What are the loops on telephone lines?

brock_lee: It’s a loop. To run a wire from pole 1 to pole 2, they run it from pole 1, around a loop, back to a second loop, and then to pole 2. This helps prevent a disruption of service should a pole fall down or something fall on the wires. The loops allow the wire to uncoil or “stretch” rather than break.

What are the things hanging from power lines?

They’re called visibility marker balls or marker balls. You’ll often find them near mountain passes, in the deep valley areas, near major freeway crossings and around airports. They weight about 17 pounds each. The marker balls are placed on power lines to make the conductor crossings visible to aircraft.

What are the black things on power lines?

What is this black cylinder hanging from the wire?

If the black cylinder is hung from a horizontal structural wire (called a messenger cable) and has its long dimension horizontally, it’s likely to be a splice enclosure. It is a place where copper wires or fiber optic strands are spliced to each other while keeping rain…

What is the purpose of a Thunder cylinder in a phone line?

It has a scientific meaning. It helps the wires maintain equilibrium. Both physically and electrically. If there is a Thunder Strike on the wire, this cylinder will save the wires by grounding the excess electricity. Thus your phone lines are safe even during a Thunderstorm.

What is a splice enclosure on a power line?

Answer Wiki. If the black cylinder is hung from a horizontal structural wire (called a messenger cable) and has its long dimension horizontally, it’s likely to be a splice enclosure. It is a place where copper wires or fiber optic strands are spliced to each other while keeping rain and snow out.

How are telecommunication wires attached to a telephone pole?

Telecommunication wires are attached to the poll using a messenger known as strand. The strand is bolted and clampes to the pole and the fiber or coax is then lashed to the strand. In case anyone was wonder how everything besides power is attached. Haha! 8 clever moves when you have $1,000 in the bank.