I am considering a portable 12v air compressor as a tire inflator, and would like to know if the Prius would be capable of running it (assuming the vehicle is in READY): VIAIR Corporation - 88P Part No. 00088 Additionally, I was also considering this unit...but am not sure if the draw would be too much for the cig-adapter: VIAIR Corporation - 85P Part No. 00085 Furthermore, any advice/suggestions on which one would be adequate for inflating passenger car tires would be appreciated. Do note that I like to overbuy, in general. Thanks!
The 19A, from clamps on the battery posts or from the under hood jump contacts while in READY mode, sounds fine to me. Numerous folks have used 120V inverters drawing considerable more than that for extended periods. The 14.5A from the 'cigarette-lighter' accessory outlet sounds risky. I believe these sockets were originally rated for just 10A, and the Prius doesn't really have a version upgraded to higher ampacity. IIRC, its fuse is 15A, which may not blow soon with 14.5A, but will quickly run into reliability problems if used more than a few times.
Use a bicycle pump with a Schrader connection. No power cord to drag around. Quicker for a top off, and a upper body work out if you need to add more than 5 PSI...
The 14.5amps running current is to much for the cig-adapter as the starting current will be many times more than this almost certainly blowing the fuse. The version running from clamps will be fine in ready mode either connected to the jump point in the fuse box or direct to the battery.