Reply
 
Thread Tools Display Modes
Old 04-05-2013, 12:54 PM   #1
SMS
Junior Member
 
Join Date: Jul 2012
Posts: 24
Surge Suppressor

I have 50 Amp service. Is there a need for a surge suppressor when plugged in to 30 Amp? Will the 50 Amp suppressor work when plugged in to 30 Amp.
__________________

__________________
SMS is offline   Reply With Quote
Old 04-05-2013, 01:18 PM   #2
Site Team - Lou
 
Herk7769's Avatar
 
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,168
Yes there is the same need for any service as it protects you from surges and over/under voltages.

When using a 50 amp to 30 amp service adapter, your 50 amp surge suppressor will suppress on the leg that has voltage and alert you that there is no voltage present on the un-powered leg.
__________________

__________________

Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW
Herk7769 is offline   Reply With Quote
Old 04-05-2013, 01:23 PM   #3
Senior Member
 
Join Date: Nov 2012
Location: X
Posts: 2,781
When a 50-amp rig is plugged into a 30-amp plug, both legs are powered and the protector will show that (same voltage). Different currents in each leg.
__________________
BarryD0706 is offline   Reply With Quote
Old 04-05-2013, 01:24 PM   #4
Phat Phrog Stunt Crew
 
awwall's Avatar
 
Join Date: Jun 2012
Location: Biloxi, Ms
Posts: 704
Not enough information SMS. I have a 50amp progressive industries EMS and it works fine in 30 amp hookup when I use my 30 to 50 amp adapter. Tell us a little more about what suppressor you are using.

Essentially, the 30 to 50 amp adapter takes the single 110volts from the 30 amp receptacle and spreads it to the 2 110v poles of the 50 amp plug, thus powering both of your internal 50 amp buses. Be aware that that you will only have 30 amps available and overload may occur at the power outlet on the pole instead of your panel in the motor home.
__________________
Wayne & Susan Biloxi,Ms
2012 GeorgeTown 351DS...2015 Ford Focus/Brake Buddy
FROG Member
awwall is offline   Reply With Quote
Old 04-05-2013, 01:44 PM   #5
SMS
Junior Member
 
Join Date: Jul 2012
Posts: 24
I didn't want to admit that I am just now looking into buying one. I wanted to be sure that a 50 would take care of my needs. When it comes to electricity, I am dumber than the average bear.
__________________
SMS is offline   Reply With Quote
Old 04-05-2013, 02:11 PM   #6
Site Team - Lou
 
Herk7769's Avatar
 
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,168
Quote:
Originally Posted by BarryD0706 View Post
When a 50-amp rig is plugged into a 30-amp plug, both legs are powered and the protector will show that (same voltage). Different currents in each leg.
Thank you Barry and Wayne. Not owning a 50 amp camper, I was under the impression that a 30 amp pigtail only powered the primary circuit and not the secondary.

Learn something new here every day.
__________________

Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW
Herk7769 is offline   Reply With Quote
Old 04-05-2013, 02:31 PM   #7
Site Team
 
wmtire's Avatar
 
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 15,020
Quote:
Originally Posted by herk7769 View Post
Thank you Barry and Wayne. Not owning a 50 amp camper, I was under the impression that a 30 amp pigtail only powered the primary circuit and not the secondary.

Learn something new here every day.
Lou, I thought the same thing basically, until we got into a discussion last week about it. That what is so great about these forums......as you said, you learn something new all the time.
__________________
2011 Flagstaff 831 RLBSS

Ducks are just all-terrain chickens
wmtire is online now   Reply With Quote
Old 04-05-2013, 06:16 PM   #8
Senior Member
 
Join Date: Nov 2012
Location: X
Posts: 2,781
Quote:
Originally Posted by SMS View Post
I didn't want to admit that I am just now looking into buying one. I wanted to be sure that a 50 would take care of my needs. When it comes to electricity, I am dumber than the average bear.
Yes, the current 50-amp units work fine with the 30-amp adapters. I recommend the Progressive Industries EMS units. They're made in USA and have a lifetime warranty.

Lou, this actually happened to me a while back. The 50-amp plug I connected to had a dead circuit. It took me a bit to figure out why half of the stuff in my RV wasn't working. They don't really wire them as primary/secondary. They just share the load. (Park fixed the plug.) I shoulda had my EMS back then!
__________________
BarryD0706 is offline   Reply With Quote
Old 04-05-2013, 07:52 PM   #9
Site Team - Lou
 
Herk7769's Avatar
 
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,168
I am trying to wrap my head around this.

The pedestal 50 amp socket is normally wired with two different feeds with each feed being a different phase. That is why measuring across the two hot wires yields 220 volts (110 from each to the neutral).

So what I think you are saying is that with the 30 amp pigtail adapter, the single hot from the 30 amp socket is connected to both of the camper's hot circuits and the Neutral. Since they are the same phase on each leg, no 220 items will work.

It also means that a camper designed with the potential to draw 50 amps on each leg (though alternating between each) is now limited to 30 amps total for both circuits. Did I get that right?

Power management would be really critical I would think.
__________________

Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW
Herk7769 is offline   Reply With Quote
Old 04-05-2013, 07:59 PM   #10
Senior Member
 
Join Date: Nov 2012
Location: X
Posts: 2,781
Lou,
yes, exactly. There are no 220 outlets or appliances in RV's for just that reason. Power management is no different than for any 30-amp RV.
__________________

__________________
BarryD0706 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 08:19 AM.