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07-28-2013, 09:56 PM
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#1
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Senior Member
Monaco Owners Club Freightliner Owners Club Holiday Rambler Owners Club
Join Date: Aug 2010
Location: jacksonville fl
Posts: 445
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installing 50 amp service
going to install a 50 amp service at the house the run is about 140 ft ,what size wire would be adequate ive been told 8 will do the trick any body else done it this distance ?
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97 Holiday Rambler Endeavor 275 Cat powered
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07-28-2013, 10:07 PM
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#2
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Senior Member
Tiffin Owners Club
Join Date: Jul 2012
Posts: 360
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Mine is 95 feet and required #6 copper wire. So 140 feet #6 for sure. Just my recomendation from research.
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Karl and Janet
Tiffin Zephyr 45QDZ
Owens-Classic Trailer, with elevator and air ride
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07-28-2013, 10:37 PM
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#3
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Senior Member
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
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Mine was ~80' and I used #6/3 with a ground. HD had a remnant that was ~3' longer than I needed. They had black taped it together and the tape glue was all squishy and got on everything. I mentioned it and they knocked off $10. It had a UV protected covering.
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07-28-2013, 10:41 PM
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#4
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Senior Member
Monaco Owners Club Winnebago Owners Club
Join Date: Sep 2011
Posts: 7,469
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Close to 100' for mine, I used #6
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US Navy Vet, Liberty Tree Member of Oath Keepers, NRA & VFW Life Member, Alaska EMT.
2009 Safari Cheetah 40 SKQ
2009 Winnebago Chalet 231CR
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07-28-2013, 10:44 PM
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#5
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Senior Member
Fleetwood Owners Club Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 15,749
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yup, #6
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Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
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07-28-2013, 10:50 PM
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#6
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Senior Member
Monaco Owners Club Winnebago Owners Club
Join Date: Sep 2011
Posts: 7,469
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US Navy Vet, Liberty Tree Member of Oath Keepers, NRA & VFW Life Member, Alaska EMT.
2009 Safari Cheetah 40 SKQ
2009 Winnebago Chalet 231CR
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07-29-2013, 02:23 AM
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#7
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Sep 2007
Posts: 2,976
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Quote:
Originally Posted by fxdave
going to install a 50 amp service at the house the run is about 140 ft ,what size wire would be adequate ive been told 8 will do the trick any body else done it this distance ?
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here is another wire size calculator.
Wire Size Calculator
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01 WINNEBAGO 35U W20.8.1L 5sp allison SW Wa,. Good Sam, SKP. RVM 198 AMSOIL fluids. BANKS ecm program. SCAN GAUGE II w/ Ally temp. 2 LIFELINE GPL-6CT AGM Batts on their sides. Michelins, TST tptts. K&N panel air filter. AERO mufflers. TAYLOR plug wires. ULTRA POWER track bar. KONI fsd shocks, toad '21MB GLA FWD on dolly
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07-29-2013, 03:40 AM
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#8
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Senior Member
Damon Owners Club Ford Super Duty Owner
Join Date: Jul 2008
Location: Nashua, NH
Posts: 721
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2006 Damon Daybreak 3274 35' Ford F53 V-10
2006 Ion Retired Navy, FAA and PASS Union VP
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07-29-2013, 06:20 AM
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#9
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Senior Member
Workhorse Chassis Owner
Join Date: Sep 2007
Location: st.charles mo.
Posts: 1,482
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Going that far I would go with #6 and if you plan on putting in a subpanel you might want to go with #4 3 wire with a ground.
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07-29-2013, 06:50 AM
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#10
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Senior Member
Winnebago Owners Club
Join Date: Jun 2013
Location: Full-timer/volunteer w/SOWERS
Posts: 3,958
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The consensus is in. Wire Size Calculator agrees. #6 CU or #4 AL. I have a shorter run in my house but the convenience of the 50A nearby is great.
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Rick & Melissa Young, 2011 Itasca Meridian 40U, Frtliner XCL, Cummins ISL 380HP/DEF, Allison 3000 MH, 2014 Honda CR-V, SMI AF1, Blue Ox, EEZ TPMS, TruCenter steering control
Servants On Wheels Ever Ready. Best job we ever paid to do . (full time volunteers)
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07-29-2013, 07:08 AM
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#11
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Moderator Emeritus
Nor'easters Club Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,785
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Once you have wire size figured out you need this information to keep the coach safe from the wrong voltages entering it.
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07-29-2013, 07:08 AM
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#12
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Registered User
Monaco Owners Club
Join Date: Oct 2009
Location: Varies Depending on The Weather
Posts: 8,517
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Quote:
Originally Posted by fxdave
going to install a 50 amp service at the house the run is about 140 ft ,what size wire would be adequate ive been told 8 will do the trick any body else done it this distance ?
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Here is a link that is your BEST friend when owning a RV.
RV Electric
Down the page after clicking on 50 amp RV Service you will see a wire size calculator.
Wire Size Calculator
When you input the parameters, it states that you would need #3 gauge for a 140 feet run 50 amp 120 VAC run.
To me that makes sense versus what was suggested in previous posts. My shore cable is #6 gauge and it's only 30 feet long. You are talking 140 feet plus.
Better safe than end up with a burned up RV.
Dr4Film ----- Richard
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07-29-2013, 07:15 AM
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#13
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Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
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Joining the choir on #6 for that long a run.
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07-29-2013, 07:48 AM
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#14
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Senior Member
Newmar Owners Club
Join Date: Nov 2011
Location: Michigan
Posts: 894
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It all comes down to how much actual current you plan to use at 1 time and what voltage drop all your equipment can live with in addition to the actual wire run length. If you are tieing into an existing breaker box or sub panel then that current used elsewhere (at the same time) comes into the calculation as well for its own feed wire size. I would not recommend #8ga copper for 50amps of 120vac at 140' but rather #3 or #4ga copper if you are starting from scratch based on what the existing feed wiring size is. It's easier doing it right the first time vs wishing for more power later.
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1999 Newmar Mountain Aire MADP 4080, Cummins ISC 8.3L, Allison, Spartan MM IFS, Howard Power Center, Chev Trailblazer LTZ Towed w/ BlueOx rigging, Segway X2.
www.shaw11.com
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