Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: Using this blew the fuses in my converter in my 5th Wheel. Why is this advertised as working when it wont work for a 50 amp trailer w/o blowing it.?
Document: Very solid build. Just bought a 50 amp 5th wheel, don't know how often it will get used. It's built to last!
It sounds great. Plug your 50 amp RV into a 30 amp AND a 15 amp outlet. One problem. As advertised it will not work with a GFI outlet. When was the last time you saw a 15 amp outlet in a campground that wasn't GFI protected?
This adapter will work for amp 30+15 to 50 convert. Amazon delivered on time for low cost ship. There some problem with plug. Some metal being corroded for boat use not expected but when new very wrong. Maybe someone return after using on boat for month, look like metal is worn but works. Still good ok and work best when dry
Had to return this Item because one of 30 amp sides was not working. Only part of my 110v equipment would not work.
I purchased the Camco RV PowerGrip for our fifth wheel which has a 50 Amp Service. The concept is that the PowerGrip enables you to connect your 50 Amp Service simultaneously to a 30 Amp and and 20 Amp service. However if the 20 Amp service (conventional house outlet) if a GFI outlet it will trip the breaker in the 20 amp outlet.
I would recommend that you ask the park owner if it is OK to use this Maximizer. First of all, the rates for sites are based partially on the electrical connection at the site as an RV drawing 50 amps is, of course, using more electricity than a 30 amp unit. What is more troubling is that there is the potential of doing harm to the electrical pedestal if it does not have the gauge of wire needed for higher amp electrical. This item sounds good on paper, but not in practice.
This device solves the low amp problem when only 30 amp service is available and you need 50. Please note that if the 15/20 amp outlet is a GFI, it will trip the ground fault and not work. You can also use an adapter and use (2) 30 amp outlets.
If you find the place you are setup with your RV does not have 50 amp service, and has an older 115 volt plug, will not work with circuit breaker 20 amp, you can gain a little extra to up your power needs. I have just such a place and this will fit the bill to allow for simultaneous use of AC, hot water heater(electric) and microwave power, beats having to stage usage.
If there is no one plugged into the site beside you and there is another circuit not being used or some campgrounds have seperate at your site 30 Amp plus a seperate 20 Amp service plug. They can't be fed off the same circuit, they have to be  on seperate circuits for this to work.This is where you can join the two together and have 50 Amp service to your RV. It will not work if the campground has a ground fault on the 20Amp service plug.
Has not worked as advertised in any campground or resort with 30 amp service and 20 amp or 15 amp110 outlet
Answer: yes