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Overhead lines have 'sag' (not 'slack') because the conductors need to be able to expand and contract as the temperature changes. If sag isn't built into the design of the line then, when the conductors contract, they will put undue lateral strain on the supporting poles or towers. It is important that, with maximum sag, the minimum clearance distance between the line conductors and the ground below is always maintained. This safety clearance increases, of course, with line voltage. Allowing for the necessary sag part of the design-process for any overhead line, and achieving it becomes the responsibility of the linesmen when the line is eventually constructed.
What else can I help you with?
Why is energy lost in power transmission lines?
Increase the voltage in the lines.
What do power lines do on a hot day?
dip
How do power lines fall down?
by storms
How can freezing rain cause electrical power outs?
The sleet clings to power lines and transformers. As the weight of this ice builds up, it breaks the line away from the power pole. It also knocks branches from trees which can also break the power lines.
What system of high tension cables by which electrical power is distributed throughout region?
Power lines
Why do engineers put up power lines so that they are slack in hot weathers?
Because, in the cooler weather, the lines contract. If the warm weather slack were not engineered into the system, the contractions could break the wires or pull the poles down.
Why do engineers put power lines so that they are slack in hot weather?
in the winter season materials such as rubber insulators and copper wire shrink and in the summer they expand just like wood. Therefore slack is needed on powerlines in relation to the weather so there is a little give to them. Engineers have nothing to do with the slack in the lines, it occurs naturally. In the sunlight objects expand a little due to the heat. This goes for roads, bridges, sidewalks, shingled roofs and hanging power lines. They sag more in the summer than in the winter. Engineers actually have to find ways so that they wont get slack. This expansion and contraction of any given material will actually shorten the life of it over time, and it will have to be replaced more often.
What is slack span inthe transmission power line?
Slack span is the Gantry and deed end tower span. this is no tension.
Why do telephone wires in warm weather slack?
All materials expand with temperature increases. This expansion in the metals and plastics of phone lines would cause them to lengthen, and thus go slack.
What is use of slack bus in ac power flow and dc power flow sepratly?
For make a system balanced losses in power
Are there power lines in heaven?
there are no power lines in heaven
What is the code to power lines three from power lines two?
123321
How do you adjust slack in power window regulator cable?
opal astra how to fixit engine electrics
Why engineers hang power cables from pylons in summer leave the cable slack?
Engineers leave power cables slack when hanging them from pylons during summer to accommodate thermal expansion. As temperatures rise, the metal cables expand, and the slack allows for this natural expansion without creating excessive tension that could damage the cables or infrastructure. This practice ensures the integrity and longevity of the power transmission system while maintaining safety standards.
Is it safe to touch power lines?
No, it is not safe to touch power lines. Power lines carry high voltage electricity and touching them can result in serious injury or death. It is important to always stay away from power lines and never attempt to touch them.
What do you mean by organizational slack?
organisational slack
What is the birth name of Garland Slack?
Garland Slack's birth name is Garland Glenwill Slack.
