John E Davies Posted June 16, 2020 Share Posted June 16, 2020 (edited) Does anyone know why they use such HUGE cables? My hull #217 has the 2000 watt inverter and 4/0 welding cable as big around as your thumb. Recommended cable size is 1/0, which is good for a 3500 watt unit. My positive cable has a 250 amp fuse. 4/0 cable is rated to carry 1200 amps up to 50 feet 😳 The bigger cable is twice as expensive ($8 per foot wholesale), way heavier and bulkier, awkward to cut, less avaialable and in general a really big PITA to work with. If they intended to upgrade the size in case of installing a larger inverter In the future, 2/0 gauge would be plenty big. Their cost savings would have been about $50 just for the wire, not including the more expensive terminals and the extra labor involved.....Here is what I have been working with- for scale that is a 1/2” cold chisel: I am pretty perplexed. As an aircraft tech I can’t see a single positive benefit from this choice. But OTH a whole lot of the electrical installation in an Ollie confounds me.....Comments? John Davies Spokane WA Edited June 16, 2020 by John E Davies "Mouse": 2017 Legacy Elite II NARV (Not An RV) Two Beds, Hull Number 218, See my HOW TO threads: https://olivertraveltrailers.com/topic/john-e-davies-how-to-threads-and-tech-articles-links/ Tow Vehicle: 2013 Land Cruiser 200, 33" LT tires, airbags, Safari snorkel. Link to comment Share on other sites More sharing options...
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