Dear Mike,
Most generators, with the exception of really large units, 10kw or bigger, do not have a 50-amp plug. I currently have a 3000 Honda and am looking to upgrade to the 6000 … the 6000 has both a 30-amp/120-volt and a 30-amp/240-volt connection. Is it possible to wire the 50-amp plug to the 30-amp/240-volt outlet on the Honda 6000? And if so, is there any advantage to doing this?
I may be thinking crazy but it seems that the 50-amp plug on the RV has two hot legs and the 30-amp/240-volt outlet on the generator has two hot legs, and other than the reduced amperage the direct connect should work? What is the right way to hook my 50-amp shore power cord to the generator? —Bob Tavenner
Dear Bob,
Camco already makes that exact product. It has a male, twist-lock, 30-amp 120/240-volt plug on the generator side, and a female, 120/240-volt, 50-amp, NEMA 14-50 outlet on the camper side.
Let’s play safe out there (especially around electricity)….
Mike Sokol is an electrical and professional sound expert with 40+ years in the industry. Visit NoShockZone.org for more electrical safety tips. His excellent book RV Electrical Safety is available at Amazon.com. For more info on Mike’s qualifications as an electrical expert, click here.
##RVT870
Update: Honda is sending me a pair of their new EU2200i generators and a parallel kit, so I’ll be able to do some interesting generator demonstrations at my RV Electricity seminars in 2019.
See my last comment. Two of these, with the 90 degree 110 volt plug. Not the straight plug. I could not find one with a twenty amp plug on it.
https://www.amazon.com/Camco-Dogbone-Electrical-Innovative-PowerGrip/dp/B000BUU5YA/ref=pd_rhf_se_s_vtp_ses_clicks_0_2?_encoding=UTF8&pd_rd_i=B000BUU5YA&pd_rd_r=017633d4-59b8-49ec-b648-e58b852e8f19&pd_rd_w=XquqN&pd_rd_wg=3jLEt&pf_rd_i=desktop-rhf&pf_rd_m=ATVPDKIKX0DER&pf_rd_p=05d75987-58ed-4d36-bbfa-515cd87e4ee3&pf_rd_r=W728504ECR3BRAYN73VC&pf_rd_s=desktop-rhf&pf_rd_t=40701&psc=1&refRID=W728504ECR3BRAYN73VC
Dear Mike, I have found it is easier and more efficient to use the 20 amp duplex outlets instead of the generator adapter.
I use two of these https://www.amazon.com/EPICORD-Adapter-Connector-Electrical-Dogbone/dp/B073RDTT6N/ref=sr_1_18_sspa?ie=UTF8&qid=1541708636&sr=8-18-spons&keywords=generator+adapter&psc=1
and one of these https://www.ebay.com/itm/New-RV-Power-Cord-Adapter-Y-Split-50-amp-Female-to-2-30-amp-Male-Connectors/172817159847?hash=item283cb496a7:g:w2EAAOSwfLVZji26:sc:USPSPriorityMailPaddedFlatRateEnvelope!28739!US!-1:rk:4:pf:0
This way I get the full out put from the Generator. you will find that many generators are rated for the value of both duplex outlets and not for the 30 amp outlet. There is then no need to add or adapt the un-bonded ground or any other small detail. 2 times 120 times 20 Amps equals 4800 watts / vs 120 times 30 Amps equals 3600 Watts. This is more than enough to power my entire RV. Of course my generator claims it is 7200 watts which would be 240volts times 30 amps. Not exactly what I can use.
You’re forgetting that the 4-pin “30-amp” connector is actually two 120-volt hot legs of 30 amps each. So that’s 30 amps plus 30 amps equals a total of 60 amps. And 60 amps times 120 volts equals 7,200 watts. Remember, that 240 volts inside of the generator is split into two hot lines of 120/120 volts. You’re not getting all the power that your generator is capable of supplying if you’re only using the 20-amp outlets. Believe me, this is how it works.
Hi guys, I have a 50 amp Denali fifth wheel that runs fine on either 50 or 30 amp shore power but my new Pulsar 4000isr generator stalls out whenever I try to run the camper from it’s 30 amp RV outlet. To my knowledge the 5er is not equipped with a generator transfer switch. I have been hooking up to the genny’s 30 amp RV outlet using my 50 amp RV power cord and a 50/30 dog bone adapter. After reading your articles I tried using an Edison plug in one of the 20 amp receptacles but still no success with the 30 amp hookup. Next thing I tried was to add a 30/15 adapter to the 50/30 dog bone so I could plug the main power cord into one of the generator’s 20 amp duplex outlets. Voila, finally power to the AC, microwave, etc. without the generator shutting down. Albeit the genny did seem like it was straining to keep both the AC and converter working at peak performance. I’m wondering if I would see an increase in performance by trying David Shipp’s double 20 amp setup mentioned above. The way it stands right now my 30 amp generator outlet is all but useless so I’m currently running my camper on a single 20 amp plug. Any solutions or suggestions?
The 30-amp plug should pull the maximum current available from the generator in that configuration. However, not all generators are created equal. I wonder if your Pulsar generator is up to the task. The easy way to find out is rent or borrow a Honda EU3000is generator and give it a try. They’re about as good as it gets. Or try to borrow any other 3,000 watt generator and plug in for an experiment. Also, you need to get a clamp ammeter on your incoming line to determine how much amperage you’re actually using. Remember that a 50=amp RV service is actually 100-amps of current at 120-volts compared to 30 amps of current from a TT-30 outlet. You might not be able to run what you want with a 3k genny. I also have a Honda EU7000 generator which is basically two 30-amp circuits for a total of 60 amps of current. Maybe that’s what you need to step up to.