AF - Asbestos Fixture

AC - Armored Cable

B - Outer Braid Usually of Glass

CPE - Customer Premises Equipment

DBRC - Double Braided Rubber Coated 

E - Elevator Cable

ER - Exposed Run

EV - Electric Vehicle Cord

EVJT - Electric Vehicle Cord with Thinner Jacket

EVE - Electric Vehicle Cord but With Thermoplastic Elastomer Insulation and Coverings

EVT - Electric Vehicle Cord but With Thermoplastic Insulation

F - Flat Band Metallic Armor

FCC - Flat Copper Conductors

FEP - Fluorinated Ethylene Propylene Insulation

FEPB - Fluorinated Ethylene Propylene Insulation with Glass Braid

FFC - Flexible Flat Cable

FFH-2 - Fixture Wire Heat Resistant

FTP - Foiled Twisted-Pair Cable

G - Ground Wires

H Wire - Heat Resistance Wires

HF - High Frequency

HH - High Heat Resistance

HPD - Heater Cord

HPN - Heater Parallel Neoprene

HL - Hazardous Location

HSO - Heater Cord with Oil Resistance Outer Covering

HSJO - Heater Cord with Oil Resistance but Only Hard Usage

IGS - Integrated Gas Spacer Cable

L - Lead Jacket

MC - Metal Clad

MI - Mineral Insulated, Metal Shielded Cable

MTW - Machine Tool Wiring

MV - Medium Voltage Cable

N - Nylon-Coated for Resistance to Oil and Gasoline  

NM - Non-Metallic Cable

NMT - Non-Metallic Tubing

NMC - Non-Metallic Cable

O - Oil Resistance Insulation

P - Portable

PAF - Perfluoroalkoxy

PCG - Portable Mine Cable with Power, Control and Ground Conductors

PD - Portable Wiring for Dry Locations

PF - Type of Fluorinated Ethylene Propylene Insulated Wire

PFA - Perfluoroalkoxy

PFD - Paraffined Electric Wire

pH - A Scale That Expresses Acidity or Basicity (Alkalinity), Denoting the Negative Logarithm of The Hydrogen-Ion Activity 

Phase - A Particular Stage or Point of Advancement in An Electrical Cycle Usually Expressed in Electrical Degrees Where 360° Represents One Cycle

PIC - Designation for Either 1) Plastic Insulated Cable Used in Communications Cable 2) Plastic Insulated Conductor

PLTC - Power Limited Tray Cable

PPE - Portable Power Cables with Jacket Made from PPE (Polypropylene Ethylene) Which Is Basically a Plastic

PTF - Polytetrafluoroethylene Fixture Wire

R - Rubber-Insulated Building Wire

RHML - Rubber-Insulated Multiple Conductors, Heat Resistant and Overall Lead-Covered

RHM - Rubber-Insulated Multiple Conductors

RHW - A Rubber Building Wire for Dry and Wet Locations

RH - Rubber-Insulated, Heat and Moisture Resistant Building Wire

RHH - Rubber High Heat Resistance Cable

RJ - Rubber Insulated and Jute Covered Cable

RP - Best Quality Rubber Insulation

RU - Rubber Insulated

RUH - Rubber Insulated Heat Resistant

S - Hard Service Cord

SA - Silicone Rubber or Silicone Asbestos

SBRC - Single Braided Rubber Covered with Cotton Braid

SC - Stage Lighting Cable

SAC - Solid Aluminum Conductor

SCE - Stage Lighting Cable with PVC or Thermoplastic Elastomer Insulation and Outer Covering

SCT - Stage Lighting Cable with Thermoplastic Insulation

SD - Service Drop Cable

SE - Service Entrance Cable

SEO - Same as SE but With Oil Resistant Outer Covering

SEOO - Same as SEO, But with Oil Resistant Insulation Also

SER - Service Entrance Cable with Reinforcement Tape

SEU - Service Entrance Cable Underground

SPT - “Zip Cord”, Fixture Cord

SNM - Shielded Non -Metallic- Sheathed

SF - Silicone Rubber Insulated Fixture Wire

SFF - Silicone Rubber Insulated Fixture Wire with Flexible Stranding

SIS - Switchboard Wire

SJ - Junior Service Cord

SJE - Junior Service Cord with Thermoplastic Elastomer Insulation

SJEO - Junior Service Cord with Thermoplastic Elastomer Insulation and Outer Covering but Oil Resistant

SJO - Service Cord but With Oil Resistant Outer Covering

SJOO - Junior Service Cord with Oil Resistant Outer Covering and Oil Resistant Insulation Also

SJT - Junior Service Cord with Outer Jacket and Insulation Of (Thermoplastic) Materials

SJTO - Junior Service Cord but Oil-Resistant Thermoplastic Outer Jacket

SJTOO - Junior Service Cord with Oil-Resistant Thermoplastic Insulation and Oil Resistant Jacket

SJEW - Junior Service Cord with Elastomer Construction, Weather Resistant

SO - Cords Made with A Special Oil-Resistant Outer Jacket

SOO - Cords Made with A Special Oil-Resistant Outer Jacket with Oil Resistant Insulation

SOOW - Service Cord with Oil Resistant Both Inside Insulation and Outer Covering and Weather Resistant

SP - Rubber “Zip Cord”

SPE - All Elastomer, (Thermoplastic) Parallel Cord

SR - Silicone Rubber Control Cable

SRD - Silicone Rubber Dryer Cable

SRDE - Same as SRD Cable but Thermoplastic Elastomer Insulation and Outer Covering

SRDT - Same as SRD Cable but With Thermoplastic Insulation and Outer Covering

ST - Service Cord Except with Outer Jacket Of (Thermoplastic) Materials

SV - Service Cord for Vacuum Cleaner

SVE - Service Cord for Vacuum Cleaners but With Thermoplastic Elastomer Insulation and Covering

SVO - Service Cord for Vacuum Cleaners but With Thermoset Insulation and Oil Resistant Thermoset Covering

SVT - Service Cord for Vacuum Cleaners with Outer Jacket Of (Therma Plastic) Materials

T - Thermoplastic PVC, Building Wire

TA - Thermoplastic and Felted Asbestos

TAS - Thermoplastic Appliance Wire Shielded

TC - Tray Cable

TW - T-Wire with Water-Resistant Insulation

TBS - Thermoplastic with Fibrous Outer Braid

TBWP - Triple Braided Weather Proof

T2 - Thermoplastic Covered Fixture Wire

TFF - Thermoplastic Covered Fixture

TFN - Thermoplastic Covered Fixture Nylon

TFNN - Thermoplastic Covered Flexible Fixture Nylon

THW - Thermoplastic Heat and Water-Resistant

THHN - Thermoplastic High Heat-Resistant Nylon Coated (THHN) Wire

THHW - Thermoplastic High-Heat Resistant and Weather Resistant

THWN - Thermoplastic Heat and Water-Resistant Nylon-Coated

TPE - Thermoplastic Elastomer

TPT - Tinsel Cord, But All Thermoplastic Insulation and Jacket,

TPS - Toughened Polystyrene

UF - Underground Feeder

USE - Underground Service Entrance Cable

VFD - Variable Frequency Drive

W - An Initial Used in Building Wire Codes to Indicate Weather Resistance

XLPE - Cross-Linked Polyethylene

XHH - XLPE High Heat Resistant

XHHW - XLPE High Heat Resistant and Water Resistant

XLP - Cross-Linked Polyethylene Insulation

Z - Modified Ethylene Tetrafluoroethylene