enblethen wrote:
SJ cord is rubberized. It is not thermal plastic. Yes there is some other cables that are thermoplastic like the brake cable.
From your link:
All four types (SJ cable, SJO cable, SJOW cable; and SJOOW cable) are considered heavy duty, due to their thermoset rubber jackets
I was REFERRING as "SJ TYPE".
For the record, The "O" designation is OIL/CHEMICAL RESISTANT which means any "S" cable which has the "O" designation is NOT STANDARD RUBBER and can and will be perfectly fine with road salt.
The "W" designation is for WEATHER RESISTANT and that means it is PERFECTLY SUITED FOR USE OUTDOORS AND RAIN/WATER/SNOW/ICE along with SUNSHINE.
Most RETAIL places only CARRY SJOOW so therefore what ever you buy is perfectly fine to use. Even many electrical supply shops do not carry SJ or SJO any more since SJOW and SJOOW basically obsoleted the older designations.
On top of that the outside jacket of SJ type cord is at least 3 times THICKER than any RV brake wire I have removed and not to mention the insulation IS far superior to brake wire.
For the record, the RV "brake wire" I have removed, the outside jacket was hard and brittle and the inside wire insulation CRACKED if I bent it more than 45 degrees. I ripped out a lot of GARBAGE "RV" quality wiring in my last rebuild..
Seen so pretty horrific sights to, found a rats nest of 12V wiring in the wall that had MELTED into a sold mass and nearly melted into the nearby 120V wiring running by it..
The 12V wires insulation CHAFFED and SHORTED as it went through a metal thimble in the stud (thimble is there to prevent screws/nails or staples from damaging the wire). I can't find the photo of that glob right now or I would post it...
Like I stated, your shore cord IS a "SJ" TYPE (could be SJ, SJO, SJOOW or any OTHER "S" designation), there is no way for me to know what the manufacturer used on YOURS) and "SJ" TYPE cordage can and will work fine. Not to mention you can find it at Lowes and Home Depot (Lowes has SJOOW 10ga for around $1.80/ft), pricy? A bit, BUT you get far SUPERIOR jacket that will most likely outlast the trailer.