If you’re using an extension cord, ensure you know the designation. Use the following codes to determine proper use.
- S: Designed for general use
- W: Rated for outdoor use
- J: Standard 300 voltage insulation
- T: Made from vinyl thermoplastic
- P: Parallel Wire Construction (air conditioner cords and household extension cords)
- O: Oil-Resistant
- E: Made from TPE
