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On Sunday, 24 November 2019 11:49:44 UTC, Dave Liquorice wrote:
A catenary cable from end of gate to post a foot or so away from the
rear of the gate should be resonably safe area but if the gate opens
more than twice the height of the gate the bottom of the cateanry
will touch the ground before the gate is open. Actually the less than
twice as you'd want some slack in the cable with the gate fully
closed.

However one could use a retractable cable reel; that wouldn't have a
hanging loop.

https://whiterosetools.com/products/...tlet-extension

An alternative is a coily flex (headphone type) with a retractable
clothes-line through the middle of the helix to stop it dragging on the
ground.

https://www.simbal.net/product-category/spiral-cables/

Festoon carriers are available to attach to the cable so the cable sheath
isn't rubbing directly on the catenary

https://www.simbal.net/product-categ...-wire-systems/

Pretty crude compared with an inductive thing at the closing end imo.

And it may be easier to wire at the closing end too.