The letters in SOOW represent cable characteristics. The "S" in the SOOW line represents "serving electrical equipment".
For portable power cords starting with S but without J, the rated voltage is 600 volts.
OO "indicates that the cable has oil resistant insulation and sheath.
'W' indicates that the cable has weather resistance and waterproofness.
The rated voltage of SJOOW power cord is 300 volts, while the rated voltage of SOOW power cord is 600 volts.
The "J" in SJOOW represents "Junior", indicating its lower rated voltage.
Both types of service lines are wear-resistant, ozone resistant, sun resistant, chemical resistant, oil resistant, and have been approved for immersion in water.
UL62 standard rubber wire cable letter meaning:
The rated voltage of cables starting with S is 600V.
SJ - This type of cable is also known as "Junior Jacket" and has a rated voltage of 300V.
E - Thermoplastic elastomer jacket. These cables have a sheath made of thermoplastic elastomer (TPE).
T - Thermoplastic jacket. These cables are made of PVC.
O - Oil resistant. The outer sheath of the cable is oil resistant.
OO - Added an additional "O" to indicate that both the outer sheath and insulation layer are oil resistant.
W - Moisture proof and waterproof. Suitable wiring for outdoor use.
No T or E - If the cable you are viewing does not have a "T" or "E", then it is made of rubber.
