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How cold should be copper lines on ac unit?
There is no real set temp for the lines ,the bigger thing is the heat that the outside unit is producing when the unit is on. A normal functional AC unit will be around 105 to 110 degrees as for the copper lines they should feel pretty cold to the touch like an ice colds beer feels in your hand......
Why are transmission voltages in ac systems generally higher than those in dc systems?
The main advantage of using ac is that you can step up and step down the voltage by means of a transformer,since transformer works only with ac. another thing is that if dc power is used for transmission,then the power loss associated with t will demand the use of transmission lines which are very thick(have a larger cross section)..for long distance transmission this may lead to the requirement of power lines with impractical dimensions.
Why is discharge line leaving outside unit cold on central ac?
The expansion device inside the outside unit expands the refrigerant gas and as a result, the discharge lines chills
What is the voltage of British rail overhead lines?
On the main railway network, overhead lines use 25kV AC. In the past, some lines used 1500V dc overhead and 6.25kV ac overhead as well, but these have all been closed or converted. Tram and light rail systems use other systems.
Is 1200kv transmission line exist?
I believe PGCIL is developing a 1200kV test lab at Bina, India. I don't believe any 1200kV AC lines are in existence currently. 765kV is fairly common.
