What Is the Difference Between the Characteristic of Spt-1 Vs. Spt-2?

SPT wires are mostly talked about when the holiday seasons are fast approaching. They are prevalent during this time due to their use in Christmas decorations. These wires are widely recognizable and serve various household applications such as lighting and light-duty domestic wiring. 

SPT wires, also referred to as lamp cords or SPT cables, exist in different types. The two common ones are the SPT-1 and SPT-2 wires, both made from an 18 gauge copper wire at their core. SPT-1 is also regarded as a standard commercial grade cord, meaning it’s undoubtedly possible to confuse it with SPT-2.  

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SPT-1 Vs SPT-2 

It’s vital to establish the individual differences between these two SPT wires before selecting one for your domestic applications. Most SPT-1 vs SPT-2 comparisons center on particular applications and the total ampere rating of the wires. However, the two share a similar amperage and can serve almost identical applications. 
 
 

The insulation thickness remains the only fundamental difference between SPT-1 and SPT-2 wire. SPT-1 features thinner insulation than SPT-2, making it slightly smaller around than SPT-2. Though these two have similar total amperage, SPT-1 thinness means it barely carries a lower electrical load. 
 
 

SPT-1 thickness is only 0.3″ while SPT-2 measures 0.45″. The thicker insulation in SPT-2 wire makes it more useful during lower temperatures where insulation is delicate and susceptible to breakage. However, the flexibility of SPT-1 wire due to the thinner insulation also makes it helpful in cold weather season. 
 
 

All SPT cables feature stranded copper conductors and polyvinylchloride (PVC) insulation. This means the wires are lead-free and are easy to handle. You’ll also enjoy all other benefits associated with PVC cables, such as high fire resistance. 
 
 

One of the most significant confusion surrounding SPT wires is the difference in amperage. There’s a massive belief amongst many people that SPT-1 comes with a much lower ampere rating than SPT-2. However, this is far from reality, considering the same amount of copper.  

The amount of copper present in the wire determines the wire’s maximum amperage. This means both SPT-1 and Spt-2 share a similar ampere rating, and the difference in thickness has nothing to do with it. 

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Main Differences Between SPT-1 and SPT-2 Wires 

All SPT wires are reliable if you’re looking at basic domestic wiring. Besides, the two have an 18 gauge copper wire, meaning they can serve almost similar roles. However, it would help to look at these key differences before making any purchase decision. 

  1. SPT-2 Perform Slightly Better in Harsh Weather Conditions 

If you’re planning on performing some decorative installations, the first wire you should look at is an SPT-1. It can withstand most weather conditions for decorative installations like setting up Christmas lights. Usually, less insulated wires hold up in these conditions, more like the thicker and robust ones. 

However, you may want to use an SPT-2 wire if your installations are meant to stay up for more days. The wire has thicker insulation, enabling it to withstand the weather better than the SPT-1 wire. On top of that, SPT-2 can also sustain fluctuations in weather to the point of holding up well even in freezing climates. 

  1. Expect Different Prices for SPT-1 and SPT-2 Cables 

SPT-1 is more popular and preferred for Christmas decorations due to its lower price. With the decorations requiring several feet of the wire, you’ll save more by opting for SPT-1. The difference in cost is also a vital consideration if you’re a homeowner seeking to install lights in your home. Since the two can perform almost the same roles, going for the SPT-1 wire makes more economic sense. 

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  1. SPT-1 Is More Environment Friendly than SPT-2 

SPT-2 is made with more insulation than SPT-1, making its impact on the environment more profound. The environmental concerns regarding SPT-1 and SPT-2 have elicited a considerable discussion between ecological activists and major companies making these cables.  
 
 

The conservationists and the general public want the companies to find a way to reduce the amount of insulation on SPT-2 cables. Usually, wires with more insulation produce a higher carbon footprint in the environment. This, among other factors, is why most people prefer SPT-1. 

What Should I Choose Between SPT-1 and SPT-2? 

SPT-1 is the perfect choice for simple domestic wiring applications such as lights. It’s also best in environmental conditions since it is a robust cable with a reasonable price tag. 

However, if you need a wire for a tough environment, SPT-2 will serve you best. It’s also ideal for outdoor lights that will be up for more days. The thicker insulation protects the wire from excess exposure to UV light and cold. These two factors damage the electrical cords if the wire is unprotected. 

Source: https://www.pexels.com/photo/crop-focused-ethnic-engineer-using-electric-screwdriver-442151/ 

Final Word 

The choice between SPT-1 vs. SPT-2 wire may come down to personal preferences. All SPT wires can perform the same functions with much ease and convenience. Most people only choose SPT-1 wire because of its high popularity, accessibility, and it is more affordable.  

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