 49528867Premium
join:2010-04-16
Fort Lauderdale, FL
kudos:3 | How To Install A 3 Phase A/C Unit On A Camper. Just have to love the accuracy of the Net. Air conditioning units for motor homes and campers have been standardized to fit into 14 x 14-inch vent openings on the RV's roof. They accept three-phase alternating current and can be installed by the average mechanic in about a half-hour. » www.ehow.com/how_5174277_install···ner.htmlWayne --
Certified Kwanon fanboy since 1971.  |
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 davidgGood Bye My FriendPremium,MVM
join:2002-06-15
none | guess since they take 1 hot, 1 neutral, and 1 ground they consider that 3 phase!
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Lack of Preparation on YOUR Part does NOT Constitute an Emergency on Mine! |
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 Lurch77Premium
join:2001-11-22
Oconto, WI
kudos:4 | reply to 49528867
You need to get with the times. All camp sites have three phase outlets now. 
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Only a biker knows why a dog sticks his head out the window. |
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 KenPremium,MVM
join:2003-06-16
Markle, IN | reply to 49528867
Three phase A/C for a camper, that would have to be a pretty big compressor. |
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According to the author's bio on the site he studied electrical engineering..... |
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Lurch77Premium
join:2001-11-22
Oconto, WI
kudos:4 | said by rex0:.......engineering..... That explains everything.
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Only a biker knows why a dog sticks his head out the window. |
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TheMGPremium
join:2007-09-04
Canada
kudos:1
3 edits | reply to 49528867
eHow, formerly Expert Village
A.K.A.: Idiot Village
The wires--black, green and white--should be cut and spliced to the wires in the roof, then covered with a liberal amount of electrical tape.
Yikes!  |
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 neonhomerKK4BFNPremium
join:2004-01-27
Edgewater, FL | reply to 49528867
Is that 208-230, or 460?? LOL |
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 cdruGo ColtsPremium,MVM
join:2003-05-14
Fort Wayne, IN
kudos:7 | reply to Ken
said by Ken:Three phase A/C for a camper, that would have to be a pretty big compressor. Does three phase necessarily indicate size? I know that three phase is typically for larger applications, but can you have a small 3-phase motor, such as were you'd typically find a small 120v motor like a box fan? |
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 dosdoxiesPremium
join:2004-12-15
Wallingford, PA
1 edit | reply to rex0
said by rex0:According to the author's bio on the site he studied electrical engineering..... You can always tell an engineer but you just can't tell him much.  |
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TheMGPremium
join:2007-09-04
Canada
kudos:1 | reply to cdru
said by cdru:Does three phase necessarily indicate size? I know that three phase is typically for larger applications, but can you have a small 3-phase motor, such as were you'd typically find a small 120v motor like a box fan? The main reason large motors are 3-phase is that such motors are more efficient, more reliable and more practical than a large sized singe-phase motor. It's also much easier to accurately control the speed of a 3-phase motor than single-phase.
The main reason smaller motors are single-phase is because they are typically used in places that do not have access to a 3-phase power supply. Yes, a 3-phase box fan motor would be perfectly doable. It would not be anymore expensive either. But who has access to 3-phase to plug in a box fan? |
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I like this tip lol
"Parking the camper next to a second-story window will allow the A/C to be lifted onto the roof from the building." |
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| reply to cdru
said by cdru:said by Ken:Three phase A/C for a camper, that would have to be a pretty big compressor. Does three phase necessarily indicate size? I know that three phase is typically for larger applications, but can you have a small 3-phase motor, such as were you'd typically find a small 120v motor like a box fan? Certainly you can have small 3-phase motors. I work at a large manufacturing facility were there are plenty of conveyor belts and similar equipment. I once noticed in one of the lines that a small gearmotor in one of the conveyors was labeled "480 VAC" which in that facility is used only for 3-phase equipment. I asked the engineer in charge if this motor was really 3-phase and he said it was and the main reason was simply reliability and durability. A similar one-phase motor is not as reliable for some reason. |
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 shdesignsPowered By Infinite Improbabilty DrivePremium
join:2000-12-01
Stone Mountain, GA | said by printscreen: I asked the engineer in charge if this motor was really 3-phase and he said it was and the main reason was simply reliability and durability. A similar one-phase motor is not as reliable for some reason. Single phase will likely have a run capacitor, a lower start torque and be less efficient. The capacitors often fail and leak oil.
3-phase motors are much simpler.
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Scott Henion
Embedded Systems Consultant,
SHDesigns home - DIY Welder |
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 JtmoPremium
join:2001-05-20
Novato, CA
1 edit | reply to 49528867
Pretty scary.
Though most large rigs have 2 Phase 50A, that is only to feed 2 AC units single phase each, and everything thing else including laundry.
And then there are those who decide to convert their home dryer circuit NEMA-30 plug to plug into their $40000 trailer at home thinking the plug looks the same as TT-30.
Very exciting..... |
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public
join:2002-01-19
Santa Clara, CA | reply to Ken
said by Ken:Three phase A/C for a camper, that would have to be a pretty big compressor. Better units have a bldc motor with a controller, making the supply irrelevant |
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 dandemanPremium,MVM
join:2001-12-05
Chapel Hill, NC
 ·AT&T Southeast
| reply to dosdoxies
said by dosdoxies:said by rex0:According to the author's bio on the site he studied electrical engineering..... You can always tell an engineer but you just can't tell him much. .....studied for one semester before he flunked out? |
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I also like the fact he mentions using "plenty of electrical tape"...no mention of using wire nuts, and just splicing it into any wiring in the roof...nevermind if it can carry the extra load.
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Quando omni flunkus, moritati. (Translation: When all else fails, play dead.)
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49528867Premium
join:2010-04-16
Fort Lauderdale, FL
kudos:3 | reply to theboz1419
said by theboz1419:I like this tip lol "Parking the camper next to a second-story window will allow the A/C to be lifted onto the roof from the building." Down here we call that Southern Engineering which is a process frequently fraught with cost overruns and emergency room visits.
Wayne
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Certified Kwanon fanboy since 1971. |
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 macsierraBaby NewfoundlandPremium
join:2003-11-30
Minden, NV | The author is an elementary school physics teacher from Blackjack Mountain Ga. This is the kind of folks we have teaching our present and future voters...  |
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