Remote battery 30 ft cable too long

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I bought the remote batter pack. Nice but my 5 in 1 is only 15 feet above ground on a pole. I've coiled the remaining cable but if I remember correctly from high school, running a current through a coil creates a magnetic field. has anyone experienced any issues such as interference?  I could just cut the cord and splice....Warranty voiding......but seeing the price it might be worth it. 
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SteveT

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Posted 5 months ago

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John Z

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SteveT,


The current drawn through the wire by the 5n1 is so small that a field generated from that should be of zero concern. Further, there are two wires running in parallel, with current flowing in opposite direction, and their individual fields should roughly cancel.


Lightning is another matter. A nearby strike could be picked up by your coil, with some possibility of bad effect. While you can not ever eliminate the possibility of damage to electronics from a nearby strike, you can make your coil effectively disappear. Squeeze it flat so that the area enclosed by the coil is zero. Use some cable ties to hold it flat. No area enclosed, no linked flux, no induction.


No need to cut that wire! 30 feet may be what you need someday.
(Edited)
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joegr

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Do note that there are three conductors in the cable instead of two.  A common wire (ground) and two +3V power wires, one from each pair of batteries.

The current is less than 1/1000 th of an amp.  There is no magnetic field to worry about.  Lightning is always a concern, but just as much so for the 15' of antenna that you have as for the excess coil of wire.  I would imagine that only a very close strike could be a problem.  I wouldn't worry about it.  (It hasn't been a problem for me so far.)
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SteveT

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Thanks for the replies. It will be squeezed flat and wire tied. Not worried about lightning. Don't get too much of that here in Monmouth Oregon and if struck it's far enough from the house...I think....