How Is SJ Cord Different from SJO Cord?

A power cord is necessary when connecting your appliance to an electrical source. However, it is prudent to consider certain factors when determining which cable to use. When deciding between buying the SJ cord or the SJO cord, it would help if consumers knew if there was a distinction. And if so, what are the differences?

The SJ and SJO power cords are not the same, but to completely appreciate the primary advantages that each provides, you must first grasp their uses. Power cords, often known as power cables, are essential components of electrical systems. The first end is connected to a power source, while the second end is connected to electrical equipment.

SJ and SJO power cords are so named due to their unique way of delivering power from the source to the appliance. Before we explain what sets them apart, let's first look at a breakdown of power cord lettering.

SJ Cord

This cord uses the S and J, providing extra hard and hard service. The SJ cord or cables with the designation SJ are appropriate for junior service, so they efficiently power small tools and appliances. This cable also has multiple conductors perfect for temporary electrical applications requiring extra hard use, such as portable lights, battery chargers, portable stage lights, heavy tools, and other industrial equipment.

The J stands for "junior service," which modifies the "S" in the designation. Despite having a stranded core and being more robust than a standard domestic power cable, the maximum voltage that an SJ cable may safely send is just 300 volts. Therefore, these cables are not as robust as their 600-volt equivalents and are better suited for less demanding tasks.

The SJ cables can handle temperatures ranging from 40°C to +60°C and a voltage range of up to 300 volts. Please be aware that the SJ cable is not resistant to liquids such as water, oil, or solvents.

SJO Cord

The SJO cords are similar to SJ cables. This is evident in the fact that SJO contains comparable letters in its name, which suggests that its qualities will be nearly identical to those of SJ. The single differentiating feature is the 'O' in the SJO cable's identification.

Like other cable types, the power cord segment has distinct meanings for each letter. "Extra Hard Service" is what the "S" in "SJ" stands for. This indicates the wire can be utilized in applications that require 600 volts or less, but as previously mentioned, the J in the label impacts the cord's ability. So, despite having a stranded core and being more potent than a domestic power line, an SJO cable can only send 300 volts.

The "J," or Junior service, is the single distinguishing feature of this cable. Hard service, or 300 volts, is what Junior Service is rated for. The fundamental difference is in insulation thickness, with thicker insulation required for higher voltage ratings of extreme hard duty, such as the "SO" electrical cord (without the "J" component), and thinner insulation required for lower voltage ratings of SJO construction.

"O," the third letter in SJO, stands for "Oil Resistant," signifying that the cable's outer jacket is oil resistant. The SJO wires have a coating on the outside of the power cable, whether they are bulk wires or flexible bulk cables. This coating makes them oil resistant, allowing you to utilize them safely in locations where they would be exposed to oil, such as in engines.

Comparison of the SJ and SJO cords

In addition to the features discussed above, the following services distinguish these cables:

1. Cost

While you can easily find the SJ or SJO power cord at Americord online stores, you should know that there are products that are priced relatively differently. While they are both of the same quality standards, the SJO power cord costs more since it has the extra feature of being oil-resistant.

The SJ cable costs less due to its lack of oil-resistant. A power cable can have several different characteristics, including "W" for waterproof and "T" for the thermoplastic coating that can withstand high temperatures. Avoiding these optional extras could save you money if you only require "SJ" or any other cord without these features.

2. Usage

SJO cords have the advantage over SJ cords regarding their diversity of use. The fact that you can use SJO electrical cables in oil-prone environments makes it handy. It is essential to get the right cord for the right job.

Do not only consider the current situation but also whether you could need the cord in the future if an oil disaster occurs. Ensure that any oil-resistant cable you buy has the letter "O" in its designation, so you are confident you can use it on rigs and other surfaces that collect oil. If your research reveals that you can get by just fine without an oil-resistant cable, then there's no reason to pay extra. Select the appropriate cord for the task at hand.

Bottomline

Precisely knowing which devices will use the power line is crucial. Because, in the end, the best cable to use will be the one that works best for the intended purpose. So, consider your needs carefully before purchasing an SJ or SJO portable power cord.