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Old February 4th 13, 05:54 PM posted to rec.aviation.piloting
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Default The new Electric Cessna 172

Dylan Smith wrote:
On 2013-02-01, wrote:
To put the wire required in perspective, those big heavy cables on an
arc welder are good for a current of around 100 Amps so your charging
cable would have to be about 30 times bigger than arc welder cables.


To be precise for an interconnect of 10m, two cables of 30mm diameter
would suffice. It would give the line boy a bit of a work out but isn't
impossible. Size-wise it's a bit like two fuel hoses but *considerably*
heavier.


I think you dropped a decimal point there.

4/0 AWG wire is about 12mm in diameter and rated for about 300 A.

Keep in mind any real world implementation would have to follow existing
regulations such as NEC and while a 30mm copper wire isn't going to
vaporize, it certainly isn't going to be cool.

Also there can be a great difference between "possible" and "practical".

However, the price and other installation details of getting the
300kW feed to the FBO is left as an exercise for the reader...


And that is if you only do one at a time.