FMS Nexus 63 power cables

Can anybody clarify the difference between FMS Nexus 63 versus the Nexus 63-L power cables?  I have enjoyed using FMS Nexus and Zero interconnects and speaker cables for years but can’t find any info on these two power cables.  Thanks for any info! 
Hospital-grade power cables will improve performance and save you money.

Don't believe me? Try it! 
I think all FMS power chords have hospital grade connectors.