SPT-1 wire is a type of parallel cord commonly used for applications like lamp cords, primarily distinguished by its insulation thickness.
SPT stands for Service Parallel Thermoplastic. These cords feature two or three conductors running parallel to each other, embedded within a thermoplastic insulation. They are widely recognized for their flat profile, making them suitable for use in indoor lighting and small appliance wiring where they need to lay flat.
Key Characteristics of SPT-1 Wire
Based on the provided reference, a defining characteristic of SPT-1 wire is its insulation thickness.
- Insulation: SPT-1 has insulation 0.03" thick. This is a key difference when comparing it to similar wire types like SPT-2.
- Structure: Typically consists of two or three parallel conductors.
- Profile: Flat and flexible.
- Material: Thermoplastic insulation.
Comparing SPT-1 and SPT-2
When selecting a lamp cord or similar wire for electrical projects, you often choose between SPT-1 and SPT-2. The primary distinction lies in the thickness of the insulation surrounding the conductors.
As highlighted by the reference:
The main difference between those two cables is that SPT-1 has insulation 0.03" thick, while the insulation of SPT-2 is 0.045" thick.
This difference in insulation thickness affects the overall diameter and durability of the cord.
Here's a quick comparison based on the reference:
| Feature | SPT-1 | SPT-2 |
|---|---|---|
| Insulation Thickness | 0.03 inches | 0.045 inches |
| Primary Use | Lamp Cords, Small Appliances | Lamp Cords, Small Appliances |
| Flexibility | Typically more flexible than SPT-2 | Slightly less flexible than SPT-1 |
Common Applications
While the reference specifically mentions using it as a "lamp cord in an electrical project," SPT-1 wire is commonly used for:
- Rewiring or repairing table and floor lamps.
- Creating custom light fixtures.
- Power cords for small household appliances (where rated appropriately).
- Temporary holiday lighting (indoor).
Understanding the insulation thickness is crucial for ensuring the wire meets the safety and durability requirements for your specific application.
