LUeno
Southwest
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Joined: 07/13/2006
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How should I explain to an electrician regarding the installation of a 50 Amp hook up with a breaker at the box.
Reason for asking is that I maybe sent to a construction project that already has electricity pumped in. The project superintendent will have a temporary 50 Amp hook up installed where I will be positioned/located on this project.
I sure don’t want the electrician making a mistake, I’ve heard too many horror stories.
Thanks,
LUeno
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djevans
Tennessee
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Joined: 03/24/2002
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Tell them to wire it like a kitchen range outlet...
Don . . . near 36.171N 086.784W, TN near here
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ozman
Ma.
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Joined: 06/16/2001
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Print this out and give it to them. rv electric
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NORM WADDELL
PENSACOLA FL 32514
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Joined: 11/16/2000
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Tell the electrician you must have
TWO HOTS 220 volts apart
ONE NEUTRAL 110 volts from each hot
ONE ground
The neutral must be full sized
Each hot gets a 50 Amp single pole breaker ganged
The RV wlll (unless it's a BIG one) use only the
two 110 volt (HOT to NEUTRAL) circuits, not the 220 volt
L NORMAN WADDELL
30 FOOT ALLEGRO
SATURN TOAD
WIFE AND 2 DOGS SUGAR BEAR & COCO BEAR
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vic46
Red Deer, Alberta, Canada
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Joined: 09/13/2007
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A second schematic follows. The wiring is NOT the same as for a range or a dryer. BIL just had an electrician do just that and the result was a cooked fridge, central vac and TV. The fuse in the TV literally exploded from being over powered, bits and pieces all over the inside of the TV. I would suggest that you get a good 50 amp surge protector and use it. They are about $300 bucks. The board for the fridge above was $200 itself plus new TV and board for the vacuum was $210. Sure makes the price of surge protection look cheap! The second web site is a comparison of surge protectors that are readily available
wiring - http://www.myrv.us/Imgs/PDF/50-amp%20Service.pdf
surge prot/ - http://viprv.com/ems/ems-chart.htm
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Bobbo
Memphis, TN
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Joined: 09/16/2007
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vic46 wrote:A second schematic follows. The wiring is NOT the same as for a range or a dryer. BIL just had an electrician do just that and the result was a cooked fridge, central vac and TV. The fuse in the TV literally exploded from being over powered, bits and pieces all over the inside of the TV.
It sounds like you had either a 3 pin 220v outlet or the electrician miswired the 4 pin 120/220v outlet. My 50amp RV outlet is, indeed, wired just like my 4 pin 220v kitchen range outlet, with the possible exception of having a full size neutral.
Bobbo, Linda and the furry kid (German Shepherd)
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djevans
Tennessee
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vic46 wrote:A second schematic follows. The wiring is NOT the same as for a range or a dryer. BIL just had an electrician do just that and the result was a cooked fridge, central vac and TV. -clip-
They are "EXACTLY" the same as a modern electric range outlet, with the obvious likely difference of possibly weather resistance.
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vermilye
Oswego, NY, USA
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Joined: 08/11/2004
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Quote:A second schematic follows. The wiring is NOT the same as for a range or a dryer. BIL just had an electrician do just that and the result was a cooked fridge, central vac and TV. The fuse in the TV literally exploded from being over powered, bits and pieces all over the inside of the TV. I would suggest that you get a good 50 amp surge protector and use it. They are about $300 bucks. The board for the fridge above was $200 itself plus new TV and board for the vacuum was $210. Sure makes the price of surge protection look cheap! The second web site is a comparison of surge protectors that are readily available To make it a little more clear - the wiring of a 50 amp RV is the same as a modern range connection that uses a separate ground, ie 4 wire. It is not the same as the older versions of range connectors that used a combined ground/neutral ie 3 wire connector. The receptacle used with a 50 amp RV is the NEMA 14-50R, the same as used with a new electric range, and is wired exactly the same.
For more information, check http://www.myrv.us/electric/.
Jon Vermilye Travel & Photo Web Pages ... My Collection of RV Blogs & Journals
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big dave
Soldotna, Alaska, USA
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Joined: 12/15/2001
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A skilled electrician shouldn't need special instructions to wire a NEMA 14-50R, the instructions are on the back side of the plug.
On a new service, I would test the voltage before I plugged in.
Dave & Rose C
90 Safari Ivory 34' DP
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kaydeejay
SE Michigan, USA
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Joined: 07/26/2004
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vic46 wrote:A second schematic follows. The wiring is NOT the same as for a range or a dryer. BIL just had an electrician do just that and the result was a cooked fridge, central vac and TV. The fuse in the TV literally exploded from being over powered, bits and pieces all over the inside of the TV. I would suggest that you get a good 50 amp surge protector and use it. They are about $300 bucks. The board for the fridge above was $200 itself plus new TV and board for the vacuum was $210. Sure makes the price of surge protection look cheap! The second web site is a comparison of surge protectors that are readily available
wiring - http://www.myrv.us/Imgs/PDF/50-amp%20Service.pdf
surge prot/ - http://viprv.com/ems/ems-chart.htm Vic, that schematic is EXACTLY the same as the one referenced by Ozman and is current code correct for a full 4-pin 50A RV or kitchen stove connection.
If you had the problems you describe, the receptacle was wired wrong.
Keith J, Retired from GM Engineering
2005 GMC Sierra 2500HD SLE 2WD/CC/SB/DA.
1999 Sunnybrook 27RKFS Fiver
Bilsteins, Line-X, Westin steps, Prodigy, Retrax, 16K Superglide, 5th-Airborne pin-box, Multi-vex mirrors.
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