Routlaw, If you worked for Hubbell, you should be able to access the same data on their web site as the rest of us. Specifications on Commercial grade, 20 amp outlets, versus Hospital grade, 20 amp outlets are listed as follows:
Insulator for Commercial Grade = Nylon
Insulator for Hospital Grade =Thermo Polyester
Material for ground strap, Commercial Grade = Steel
Material for ground strap, Hospital Grade = Brass
Material for voltage contact, Commercial = Alloy Brass
Material for voltage contact, Hospital = Pure Brass
Material for mount strap, Commercial Grade = Steel
Material for mount strap, Hospital Grade +Brass, Ni plate.
The materials used in manufacturing Hubbell hospital grade products are higher quality, and should not surprise anyone that they sound better. Just compare the insulators and conductors, not even considering the plating and grounding specs.
Tireguy, for what it is worth, the Hubbell is better than the Leviton. Why don't you gamble $15.00 for a single piece and do the test yourself.
What you save on tire balancing alone could equip your entire system :^ )
Insulator for Commercial Grade = Nylon
Insulator for Hospital Grade =Thermo Polyester
Material for ground strap, Commercial Grade = Steel
Material for ground strap, Hospital Grade = Brass
Material for voltage contact, Commercial = Alloy Brass
Material for voltage contact, Hospital = Pure Brass
Material for mount strap, Commercial Grade = Steel
Material for mount strap, Hospital Grade +Brass, Ni plate.
The materials used in manufacturing Hubbell hospital grade products are higher quality, and should not surprise anyone that they sound better. Just compare the insulators and conductors, not even considering the plating and grounding specs.
Tireguy, for what it is worth, the Hubbell is better than the Leviton. Why don't you gamble $15.00 for a single piece and do the test yourself.
What you save on tire balancing alone could equip your entire system :^ )