Is there any reason this type of outlet should not be usedYou have made a good choice for your application. MOV protection is built into these outlets, connected in parallel to the line, so there is no degradation of surge impedance which would constrain dynamic transients. Your dual-gang cascaded approach to surge voltage protection is also the preferred approach.
Surge protective outlets?
I want to install Leviton hospital grade 20 amp outlets with surge protection built into them. The catalog # is 8381. 320 Joules, 500V clamping voltage. They will be used with a basic Home Theater system, not high end audio. Each dedicated 10/2 20 amp line will have one outlet. Is there any reason this type of outlet should not be used. I want to save space and avoid using power strips for surge protection. The main electrical panel also has a whole house surge protector installed. Any other ideas? Mabey a different brand of outlet? What are your thoughts about using these outlets on high end audio equipment?