"John Williamson" wrote in message
...
On 28/07/2014 11:52, The Natural Philosopher wrote:
On 28/07/14 08:19, John Williamson wrote:
On 28/07/2014 01:56, The Natural Philosopher wrote:
No it really isn't dielectric losses.


It's capacitive loading.

Exactly.

But the power isn't lost *in* the dielectric, its lost in driving the
current down the wires *to* the dielectric.

There is a niggling, and mostly insignificant loss in that the insulation
isn't a *perfect* dielectric, but yes, the main losses are in the
conductors.


There is a small amount of energy taken to reverse the electric field.
https://en.wikipedia.org/wiki/Dielectric_loss