NEMA - National Electrical Manufacturers Association
|NEMA aids the electrical industry by developing technical standards and shaping public policy for electrical equipment. The association has published over 500 standards. NEMA's standards that fall into the world of MIL-Spec wire include NEMA HP3 and NEMA HP4 for hook up wire.
NEMA HP3 and NEMA HP4 were designed as non-government standards for the replacement of certain styles of MIL-W-16878. These types of hook up wire, as outlined by NEMA, are used for high and low temperature resistance, low dielectric constant, solder iron resistance, resistance to cleaning solutions or a variety of chemicals that may come into contact with either the wire or the equipment, good flexibility and flex life when stranded conductors are used.
NEMA HP3 PTFE Hook Up Wire
NEMA HP3 is a standard for PTFE Insulated Wire. It replaces MIL-W-16878/4, MIL-W-16878/5, and MIL-W-16878/6. The MIL-Spec Wire may be used for the internal wiring of electronic equipment and appliances. It has a low coefficient of friction, which promotes easy handling. NEMA HP3 MIL-W-16878 also has excellent chemical resistance and is suitable for immersion in gasoline, gasoline vapor and oil (at a maximum of 80ºC). Weathering, ozone, and corrosive environments do not affect FEP insulation.
NEMA HP4 PTFE Hook Up Wire
NEMA HP4 is a standard for FEP Insulation Wire. NEMA HP4 replaces MIL-W-16878/11, MIL-W-16878/12, and MIL-W-16878/13. NEMA HP4 MIL-W-16878 wire has many of the same characteristics as NEMA HP3 PTFE Hook Up Wire. FEP insulation is not affected by weathering, ozone, or corrosive environments.
QPL - Qualified Products List
|The QPL, which stands for "Qualified Products List," is a listing that identifies both materials and suppliers whose materials are approved for use on certain federal or government projects without the need for any additional documentation or testing. On the QPL, only specified manufacturers are approved to make selected parts for federal, military or airframe applications because they have proven they can produce the standard products to particular requirements. If a federal agency needs to purchase a product, it will seek out businesses that already have products on the suitable QPL.
Products that are labeled "QPL Approved" satisfy qualification requirements of the applicable military specification. In order to obtain QPL approval, a company must submit a sample product to be tested against requirements by the approved testing agency. The qualification process takes place before federal purchasing to ensure product qualification without delay in delivery of materials.
In contrast to QPL material, non-QPL material has not met the appropriate requirements or undergone the needed performance tests to receive QPL approval. Because the material may not be made to the same standards for quality, non-QPL cable may have a shorter lifespan that QPL material. However, a benefit of non-QPL material is price as the material usually costs less.