Last summer I installed a Dirt Devil Central RV Vac. After thinking I was going to tap into an existing 15-A circuit I had another idea.
My Xantrex Freedom X Inverter was in one of the ourside storage compartments under the area where I intended to mount the van unit under one of the dinnette bench seats. There was already an hole in the floor for other wiring. I purchased the optional 20A GFCI outlet for the Xantrex Inverter (easy 2-minute installation). I then bought about 6' of 14/2 SOOW cord and then installed a male plug end, ran the other end through the hole in the floor after poking a hole in the foam insulation and then installed the female receptacle and sealed up the hole with more spray foam.
I plugged in the central vac and it works great. The wire does not even get warm to touch when running the vac for the typical 5 - 10 minutes it tales to clean the coach.
I also got the added bonus of being able to run the vacuum without shore power or without running the generator since I am tied into the Inverter.
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