Pedestal supply for 1999 Holiday Rambler Endeavor

Yes, it's a simple four wire system hooked to a double 50A breaker... two hots and a ground and neutral. Depending on the pedestal you buy, it may have a 30A and 15A GFI 120V outles in addition to the 50A 240V outlet. Do not worry about the 240V as the camper splits it into two 120V as very few RV's use 240V.
Instead of spending $200+ on something like this


all you need is something like this on a wood post from HomeDepot for $30.

The hots go to the outside lugs and you will hear you need to get an electrician to do this complicated and dangerous task. :S
OP, here is a site with more info... click on 50A on left and it has a table for wire size/distance.

This is simplified drawing of a campground wired pedestal.


NOTE: A 120VAC 20AMP SERVICE would wired the same as the 30AMP side but using a 20AMP CIRCUIT BREAKER

When you get done use these pictorials to TEST your wiring using a MULTIMETER.

50AMP SERVICE


30/20/15AMP SERVICE

Photos from GOOGLE IMAGES

If you read the VOLTAGES the same as shown here you did good.

DO NOT plug-in your trailer to anything different in the readings...

Roy Ken

Perfect.

Two excellent and fully descriptive posts.

I strongly suggest you set yourself up with a 50A receptacle that has a breaker next to it. That way you can turn off power when plugging and unplugging. Otherwise you risk contact damage and even more damaging, the dreaded floating neutral.

Just make sure you use the proper receptacle. The one you want is a Nema 14-50. That will be embossed on the receptacle...RVs use 14-50 P for plug and R for receptacle.

For those interested, here is what I use before plugging my coach into any outlet, be it my own or a campground's. It can be found on the link provided above...Dennis



Mine is several years old so the SKU's may have changed.

50 AMP Tester
Parts: Parts are from Home Depot
1. ¾” 2 Gang 59cu Grey Plastic Electrical Box SKU 534-714 One
2. ¾” Female Adapter SKU 202-924 One
3. FS Box Cover Double Duplex SKU 872-585 One
4. 20 AMP Nylon Duplex Receptacle SKU 250-376 Two
5. 12-4 SOOW 600V Rubber Cord SKU 369-269 1 Foot
6. ¾” Strain Relief (2 pack) SKU 115-416 One
7. Angle Plug 2P 50Amp 14-50P SKU 614-001 One
8. 3 Wire Circuit Analyzer SKU 345-238 Two
9. Hi Vis Tester GET-213HV SKU 327-838 One
Total Cost: About 53 Bucks
In addition, you will need a plug in Voltage Meter from Camping World or similar. About 16 bucks w/ Presidents Club discount. You will also need a small, about 1” piece of scrap ¾” conduit. (to join the female adapter to the 2 gang box.
Tools you will need:
1. Phillips Screwdriver
2. Wire Strippers
3. Wire nuts
4. Dremel Tool or similar
5. Common (slotted) Screwdriver
6. Soldering gun, solder and flux
7. Household Plastic Glue
8. Grey Caulking Compound

"Should this be wired in as a 50 AMP 120/240 volt ac single phase".

NO, It is 2 phase. If you attempted to wire to the single phase, you would NOT get 230/240 across the 2 hot leads. Doug

ScottG wrote:
I strongly suggest you set yourself up with a 50A receptacle that has a breaker next to it. That way you can turn off power......

The OP's HR has a time delay of aprox 20 seconds before the power is applied so no load when plugging in. Other than turning the ACs off before disconnecting I would not worry about hurting the contacts.
I wonder how many times in a CG people plug in/out without turning the breakers off? As the owner of a CG I have never replaced a 50A outlet in 20 years, the 30 amps ones YES.
I do have a couple sites with just a 50A outlet, but I did put in a separate grounding rod for it.

dougrainer wrote:
"Should this be wired in as a 50 AMP 120/240 volt ac single phase".

NO, It is 2 phase. If you attempted to wire to the single phase, you would NOT get 230/240 across the 2 hot leads. Doug

Standard residential (and RV) supply is single phase, with the neutral taken from a center tap. If you look at the electric utility's transformer for a hose (where it's visible, i.e. on an overhead line), you'll see that it connects between one of the three (high voltage) phases and neutral in practically all cases, hence it's only a single phase supply. The two hots do end up being 180° out of phase with respect to each other when referenced to the neutral line.

(There may be a very few electric utilities that use a delta rather than a Y configuration, where the transformer would be between two of the phases, but that's not the usual arrangement. At any rate, the output from the single transformer is still single phase.)

Any two-phase application I've run across has been in things like control systems with servomotors, and the two phases are typically around 90° with respect to each other. Electrical utilities do not generally supply actual two phase power—it's either single phase or three phase. (Of course, with three phase power, the three hots phases are 120° with respect to each other. 120V hots, with respect to neutral, end up being about 208V with respect to each other.)

dougrainer wrote:
"Should this be wired in as a 50 AMP 120/240 volt ac single phase".

NO, It is 2 phase. If you attempted to wire to the single phase, you would NOT get 230/240 across the 2 hot leads. Doug

DrewE is correct, it's a "split-phase" service, not "2-phase".

I'll differ with Ivylog and recommend that you install a 50/30/20 power pedastal. Here's one for $119.95. I find the 20A outlet handy, and I use the 30A in the off season so my 50A power cord isn't exposed to the elements during the winter.