At DC or low frequency AC, current flows throughout the conductor, so actually you have more surface area (for a given cable diameter) with solid wire than stranded wire for a conduction path. As frequency increases, and we are talking about up in the HF, VHF, UHF, and beyond, current flows on the surface...path of least of resistance. That's why "Waveguides" are effective for microwave frequencies; very low loss, high surface area, signal totally encapsulated.
I had a 4230 with batteries on either side and daisy chained together for 24V, mother deere OEM. Slow starter in the winter. Got tired of that so I made some changes.
I mounted new 12v, size 31 (⅜" studded size 27s) OTR truck batteries, very reasonably priced as the OTR dealer bought batteries by the pallet, 960 CCA each on either side as was the OEM positioning and ran parallel 2/0 stranded wire across connecting the batteries in parallel.....which the OEM truck dealer made up for me at a reasonable price; same wire used on OTR trucks.
From the battery adjacent to the starter, I ran (as short as possible) the + 2/0 to the solenoid input and the - 2/0 mounted under a starter bolt, with the connection nice and shiny and tight such that the lead was in contact with the mounting flange of the starter. This made the lowest conduction path for the least starting current resistance.
I don't need to tell you what a difference it made. All I had to do was be near the tractor and just "think" about starting it and she lit right off on her own......well not exactly, but you get the idea. Grin!
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Today's Featured Article - Trailering Your Tractor - by Curtis Von Fange. One of the fun things of summer and fall are the parades and tractor shows that go on across America. Many owners of tractors travel long distances to attend these shows and they usually take their restored iron along with them. Safe trailering practices and inspections will ensure that the event is a fun one. A good habit to develop when using a trailer is to give that �quick look over� before taking it on a trip. Before hooking up to it check the tongue for proper operation. The latche
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