Instruction: Answer the given question using the supporting document.

Input:
Question: Can you use a 34750 on a 30 amp camper?
Document: I have a 30 amp and a 50 amp unit because of a previous RV. The addition of the LCD display improves this unit over the older models. Fluctuations in power , on/off line, are kept out of my RV by the use of the timer function. I would improve this unit by having a function swith to monitor each phase for voltage and current. Still a great deal over the price of a dealership sales.
I purchased the TRC 34750 Surge Guard 50-Amp Model for my motorhome. In its 13th month my Surge Guard stopped working. I realized it had only a 12 month warranty but I hoped the factory would extend the warranty an extra month to cover my unit. I was told my TRC 34750 was out of warranty and there would be no extension. So I asked where I should send it for repair at my expense.
I had a travel trailer and used the 30 amp model for many years with no bad results. Now have a motorhome and bought the same brand, except in a 50 amp. Great item! Never a worry when power changes from normal to low or a spike. This baby saves my indoor electronics, like A/C, refrig, tv and all the other that is plugged into an electric outlet.Depend on TRC. Nobody does it better.
So far, so good. We plug the trailer into a TRC voltage regulator. Then we plug the regulator into this surge guard. Next, we  put the regulator and surge guard under the trailer on a couple of orange plastic Lynx blocks so they will stay dry if it rains. Lastly, we run a 30-amp extension cord from the surge guard to the post. After double-checking for correct polarity with one of those typical super-cheap testers, we plug into the post.
Easy to use Great for protecting your RV, Used for the time it works great, good protection the RV System
I have had my SurgeGuard model 34750 for only 16 months and it has stopped working. No lightening strike or visible damage. So far I have made three phone calls to TRC to request warranty work. No calls back on how to file a warranty claim and tech support's answer to me was to 'keep monitoring it'. Not sure which part of 'it does not work' got the guy confused but he just sent me to someone's voicemail.
This item was as described. It arrived on time. It is easy to use and store. Great way to protect my trailer's air conditioner from power fluctuations.
if you have a 50 amp rig or 5th wheel this is a must have, you do not need to blow any of you electrial systems.
Product works great. My only complaint is the size & weight but that is true for any 50 amp accessory.
Easy to use and works great. Although a little pricey it is a must-buy for every RVer. It is a small price to pay for the assurance that you are not about to plug into a spot that will damage your RV and spoil the trip.
Answer: You should acquire the 30A version of this device from TRC.  Its called the TRC 34730.  To use the 50A version, you would need a cable to convert from 30A to 50A to connect to the 34750, then a 50A to 30A to connect from the 34750 to your vehicles 30A cable.