Forum Discussion
theoldwizard1
Nov 17, 2017Explorer II
vermilye wrote:
My only concern is with the quality of the outer jacket on extension cords. Some are fine, others are thin and easy to damage. If you use cords that are rated (S or SJ) and the various versions with additional specifications, you are good to go, although the insulation on the S or SO cable may be large enough to make it difficult to fit the holes in the boxes.
- The difference between "S" and "SJ" cordage is 600V rated insulation versus 300V insulation.
- The "O" means the insulation is oil resistant. "OO" means both the inner and outer insulation are oil resistant.
- The "W" means the outer insulation is water resistant.
- Stay away from any codage that has a "T" in its rating. This means thermoplastic insulation that is hard/brittle in cold, and soft when warm.
These ratings should be stamped in the outer insulation.
SJOOW would be good. If you want heavier insulation, get SOOW. Both are available from https://www.wireandcableyourway.com
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