Actually i was going to buy the same one in order to offer some kind of protection for my Hughes. Mfg website suggests it to be first in line from the pedestal, then comes my Hughes Autoformer then third in line, just before the TT the model 34830 which offers:
Shuts Off Power in Event of:
•Open Neutral
•Open Ground
•Low (<102V) and High (>132V) Voltage
•Thermal Line/Load Overtemperature
Indicates:
•Voltage and Amp Draw (RMS)
•Surge Failure (light indicates when surge protection has expired)
•Reverse Polarity (miswired pedestal, elevated ground voltage)
Features:
•2450 Joules surge protection
•6500 amps spike protection
•120 volts, 30 amps
•10/3 cord
- See more at: http://www.campingworld.com/shopping/item/portable-surge-guard-with-lcd-display-30-amp/81277&utm_source=google&utm_medium=cpc&scid=scplp81277&sc_intid=81277?utm_campaign=SC_Shopping_Low&affiliateid=6338&gclid=CjwKEAjw3drIBRCOwfC-_qqyjQ8SJADvoWQpdC6_AnHNJKFREt_tJvYyugUYnsO5p2p2fQNLjPoTCBoClFDw_wcB#sthash.CgVo4hXQ.dpuf
If it helps , i based my thought on this thread (p2 TechWriter and Mexicowanderer )
https://www.rv.net/forum/index.cfm/fuseaction/thread/tid/28543300/srt/pa/pging/1/page/2.cfm