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Old 09-27-2018, 12:36 PM   #29
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Originally Posted by Old-Biscuit View Post
Doesn't take any sophisticated system......


Look at pedestal circuit breakers.
One or Two 50A CBs?
Not exactly surefire!

Doubt it happens very often but you never know,, Someone could have split that single 120 volt hot wire into 2 wires and fed them into that double pole breaker.

Having said that, I wouldn't worry about it too much. For my peace of mind, i'd just get a voltmeter and be sure to check for correct voltage (240 across hots, 120 hot to neutral, 120 hot to ground) at new campsites before plugging the car in. Would take a whole 30 seconds or less to do the check.
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Old 09-27-2018, 01:03 PM   #30
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Originally Posted by Mudfrog View Post
Not exactly surefire!

Doubt it happens very often but you never know,, Someone could have split that single 120 volt hot wire into 2 wires and fed them into that double pole breaker.

Having said that, I wouldn't worry about it too much. For my peace of mind, i'd just get a voltmeter and be sure to check for correct voltage (240 across hots, 120 hot to neutral, 120 hot to ground) at new campsites before plugging the car in. Would take a whole 30 seconds or less to do the check.
And if its not 240, the OP has already paid for the spot and driven to the site.
He is hoping to know before checking in.
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Old 09-27-2018, 01:06 PM   #31
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And if its not 240, the OP has already paid for the spot and driven to the site.
He is hoping to know before checking in.
Since almost all 50 amp RVs don't use 240, this isn't to big a deal, except that the neutral may be overloaded at some point.
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Old 09-27-2018, 01:29 PM   #32
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Since almost all 50 amp RVs don't use 240, this isn't to big a deal, except that the neutral may be overloaded at some point.
A lot of higher end rigs do need 220/240 connections. Even my relatively cheap (less than $1 million) CC has a 220/240 volt dryer.
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Old 09-27-2018, 02:28 PM   #33
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A lot of higher end rigs do need 220/240 connections. Even my relatively cheap (less than $1 million) CC has a 220/240 volt dryer.
OK, well, then your 240 volt appliances won't work. Have you ever experienced this? You are the canary in the coal mine and would know immediately.
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Old 10-03-2018, 04:34 PM   #34
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Your nutral wire in your power cord would have to be able to carry up to 100 amps. I think this could cause a few problems.
This is the real problem with cheater circuits. If you have a good indicating surge protector on your input it should detect it. If you find one do as stated above. Raise holy hell on the review forums and everyone benefits.
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Old 10-04-2018, 02:45 PM   #35
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I'm pretty sure your electric car can be charged from 120vac if need be. I'm sure there will be times you have only 30a service available.
https://www.energy.gov/energysaver/a...c-vehicle-home

I think so too - most PEV are set up for Level 1 and Level 2 charging
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Old 10-04-2018, 02:59 PM   #36
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If you actually need a 240 outlet spend $25 and build a simple test plug that will light at 240 vac OR simply test the outlet with a voltmeter.

If you don't have the skill set to understand my suggestions I guess you will just have to wing it.

Best of luck!
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Old 10-04-2018, 03:53 PM   #37
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Build a box for yourself that you could use in emergency. Two 30 amp inlets and one 50 amp outlet for your cars charger.
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Old 10-04-2018, 03:54 PM   #38
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At the top end Honda:

https://www.amazon.com/Portable-Gene.../dp/B0073W4U4K

Why not tow a flat bed trailer? If the axle on the trailer is in the right location and with judicious location of the automobile you can keep your tongue weight within limits. After that it's up to you not to over-tax your brakes and engine.

FWIW when i installed the blocks for our motorcycles I placed the center stand for the bikes right over the trailer axle.

Campground advertising can be "interesting."


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Old 10-04-2018, 03:55 PM   #39
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1) OK, if you use a 50aRV to 30a receptacle adapter, it connects both legs of coach to SAME hot, LIMITING to 6,000-watts; which should offer no problems, even to two A/C Units UNLESS you have a 220v device, (Maybe a clothes dryer heating element?). The advantage can be REDUCED RISK of frying everything IF the Neutral FAILED to transfer, or transferred (a micro-second) AFTER THE TWO HOTS, (putting 220v across the (now in-series 120v devices)) WHEN THE NEUTRAL FAILS TO TRANSFER with the 30a adapter, you simply lose power and NO RISK of hi/low voltage issues. If the NEUTRALS are BONDED (bypassing the TRANSFER SWITCH, NOT SWITCHED IN 50A), The RISK is limited to neutral loss at the POWER POLE, and NOT a risk in the RV switch itself. So How many Class-A have a 220v GEN? GEN capacity larger than 7,500? Use 220v DEVICES in their Class-A? I guess if you had a 12k gen w/ 220v Water Heater and multiple 1500w heaters w/ electric stove?
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Old 10-04-2018, 04:43 PM   #40
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I doubt there will be a "cheater" issue at decent quality RV parks. One possible problem can be old and worn outlets with poor contacts that may overheat or provide low voltage when a full 12 KW load is applied. Most motorhomes with 50 amp service will rarely pull the full rated capacity of the circuit. Mine usually is in the 3 to 5KW range with the A/C running.
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Old 10-04-2018, 04:48 PM   #41
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1) OK, if you use a 50aRV to 30a receptacle adapter, it connects both legs of coach to SAME hot, LIMITING to 6,000-watts; which should offer no problems, even to two A/C Units UNLESS you have a 220v device, (Maybe a clothes dryer heating element?). The advantage can be REDUCED RISK of frying everything IF the Neutral FAILED to transfer, or transferred (a micro-second) AFTER THE TWO HOTS, (putting 220v across the (now in-series 120v devices)) WHEN THE NEUTRAL FAILS TO TRANSFER with the 30a adapter, you simply lose power and NO RISK of hi/low voltage issues. If the NEUTRALS are BONDED (bypassing the TRANSFER SWITCH, NOT SWITCHED IN 50A), The RISK is limited to neutral loss at the POWER POLE, and NOT a risk in the RV switch itself. So How many Class-A have a 220v GEN? GEN capacity larger than 7,500? Use 220v DEVICES in their Class-A? I guess if you had a 12k gen w/ 220v Water Heater and multiple 1500w heaters w/ electric stove?
1) OK, if you use a 50aRV to 30a receptacle adapter, it connects both legs of coach to SAME hot, LIMITING to 6,000-watts; which should offer no problems, even to two A/C Units,

This is wrong. 30 amps is only 3600 watts.
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Old 10-04-2018, 04:55 PM   #42
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Build a box for yourself that you could use in emergency. Two 30 amp inlets and one 50 amp outlet for your cars charger.
^^^^^^^^ Doesn't understand the problem.
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