STO

6 coding systems recognise this code

NEC / UL (USA)

SymbolMeaning
SService cord, 600 V, extra-hard usage
TThermoplastic (PVC) insulation and jacket
OOil-resistant outer jacket
STOStandard thermoplastic flexible cord, oil-resistant. 600 V, 60 to 105 C. UL 62; NEC Article 400, Table 400.4

UTE

SymbolMeaning
SFlexible Cable
TTextile Braiding Over Twisted Cores
ONo Filler

NEC 400

SymbolMeaning
SExtra Hard Usage Flexible Cord
TThermoplastic Insulation And Jacket
OOil Resistant Sheath

CEI-UNEL 35011 (Italy)

SymbolMeaning
SSector Shaped Stranded Conductor
TGlass Braid
ORound Cable Laid Up Cores

NBN

SymbolMeaning
SSignal Cable
TMoving Installation
OOrdinary Load (750 V)

KEMA

SymbolMeaning
SMulti-Wire, Round-Section, Class 2
TThermoplastic Elastomer Insulation
OOval Conductor