Definitions of Courier and Regular Mail: Courier: Courier is a type of faster postal service. Regular Mail: Regular mail is the normal postal service that takes more time. Pickup Service: Courier: Courier services offer pick up facilities where they come and take the package that you want to mail from your home. Regular Mail: Regular mail does not offer pick up services. Cost:
About the National Electrical Manufacturers Association. The National Electrical Manufacturers Association (NEMA) is the association of electrical equipment and medical imaging manufacturers, founded in 1926 and headquartered in Rosslyn, Virginia.
NEMA enclosure standard for electrical motors. The enclosures of electrical motors are standardized by NEMA (National Electrical Manufacturers Association) as: Ventilation openings in shield and/or frame prevents drops of liquid from falling into motor within up to 15 degree angle from vertical.