AccessWorkBoots
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- Location
- NJ
Hello, I am sizing the conductors from an 8 kw generator to the auto xfer switch for a residential application. I want to calculate the voltage drop on these conductors. The generator has a 2/35 circuit breaker. The nameplate on the generator is 240/120 v, 66.6/33.3 A. My cable length is 75 feet and copper conductors are in PVC. As a double check I used the online calc at http://www.southwire.com/support/voltage-drop-calculator.htm which gives me a #8 thhn. I used the nameplate rating of 33.3 amps as my load. However, Generac's website recommends increasing wire size at 45 feet. Given the loads that will be served by this generator it won't have to supply full load of 33.3 amps but I sized everything according the 8 kw. Am I right about being able to use #8's? Of course I will actually use what the manufacturer recommends but they don't say what size wire to use, they only say if you are over 45 feet then you must increase the wire size, so how about if I was 145 feet. Would I be able to use the basic voltage drop calculation, everything else being equal?
Thanks, Jim
Thanks, Jim