EXTENSION CORDS

Regarding the use of extension cords consider the following questions:
Will you be using the cord indoors or outdoors?
What is the total amperage or wattage it will be supporting?
What is the maximum distance you need the cord to reach?
What wire gauge and coverings are best suited to your needs?
How do you safely use and store your extension cord?

Types of Extension Cords

Cords with an S (standard service) rating are heavy-duty, rubber-insulated units rated for up to 600V
SJ (junior service) cords are similar to S cords but have less insulation and are rated for up to 300V
Cords with a W in their rating code indicate weather resistance for outdoor use
T indicates that the jacket is made of thermoplastic vinyl, which can be less flexible
P cords are parallel, or flat, cords (as opposed to round) and are typically used indoors
O indicates the outer jacket is resistant to oil; OO indicates inner and outer oil resistance

Consult the following chart to learn about some common types of cords, their characteristics and typical applications.

Type              Characteristics                             Application

HPN          Rubber/Parallel cord        Indoors Small heat-producing appliances

SJOW       Rubber/Rated for 300V
                      Oil-resistant
                  Weather-resistant
                      Highly flexible                     Indoors/outdoors Heavy-duty use

SJT              Thermoplastic vinyl
                       Rated for 300V                                       Indoors

SJTW           Thermoplastic vinyl
                       Rated for 300V
                     Weather resistant   Indoors/outdoors/outdoor power equipment

SPT-2           Thermoplastic vinyl
                          Parallel cord                           Indoors Multipurpose use

SPT-3            Thermoplastic vinyl
                          Parallel cord
                  Thicker insulation than SPT-2       Indoors Major appliances

SRDT             Thermoplastic vinyl
                         Rated for 600V                       Indoors Ranges and Dryers


For devices with electrical loads of 10 amps or fewer, select a cord with 16-gauge wire

For devices with electrical loads up to 15 amps, choose a 14-gauge cord for lengths of 50' and under and 12-gauge cord for lengths of over 50' and up to 100'

Always match devices that have a three-prong plug with a three-prong extension cord

The smaller the gauge, the thicker the wire, so 14-gauge wire is actually smaller than 12-gauge wire

Never use an indoor-rated cord outdoors
Always unplug cords when no longer in use
Regularly inspect cords for nicks, cuts or tears
Replace worn or frayed cords immediately Keep cords out of traffic areas to prevent tripping
To disconnect, pull from the plug, not the cord
Do not string multiple extension cords together

Lowe's extension cords are supplied with pictures to help show you the proper usage.