Joel:
I am correcting you. Twisting wires causes cancellation of RF
energies. This is true for wires that have RF energy on them that you wish
to keep from emitting RF energy or wires that do not have RF energy and you
wish to prevent them from receiving RF energy.
Therefore, if one could twist battery cables tightly enough, one might
reduce RF emitted from them. This is not always practical for 4/0 cables,
but is practical for small gauge sensor wires.
One of the best wires for rejecting RF energy is your garden variety Cat 5
cable. We use it to send audio signals (I volunteer as a technician for
entertainment events) for up to 2,000 feet and in the same cable is a ring
line with 100 VAC at 20 cycles. There is no cross talk. What also makes
this possible is the audio signals are a true balanced signal -- every
electron that moves one direction causes another electron to move the other
direction in the other cable. This allows "common mode rejection." This
is cancellation of any induced signal. The induced signal causes electrons
to move in the same direction at the same time in both wires of the
pair. This equi-direction signal can be easily removed by a transformer or
matched linear amplifiers.
I go into this detail only in hopes engineers with Outback might see if
these principals might be applied to future designs.
William Miller
At 09:17 AM 3/28/2009, you wrote:
Please correct me if I am wrong, but I thought that twisting wires creates
a magnetic field and increases radio frequency interference.
Please note new e-mail address and domain:
William Miller
Miller Solar
Voice :805-438-5600 Fax: 805-438-4607
email: will...@millersolar.com
http://millersolar.com
License No. C-10-773985
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