Installing a digital Amps/Volts Meter - Page 2 - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 03-08-2009, 08:51 PM   #15
Senior Member
 
Roy in TO's Avatar
 
Name: Roy
Trailer: 1972 boler American and 1979 Trillium 4500
Ontario
Posts: 4,954
Looks good Steve.

Thanks for the insight on TV charging and reefers.
__________________

__________________
Roy in TO is offline   Reply With Quote
Old 03-08-2009, 09:20 PM   #16
Member
 
John H's Avatar
 
Trailer: 25 ft Bigfoot (25B25RQ)
Posts: 46
Steve,
That is very nice set of meters. I also understand that the real time calculated plus or minus amp-hours is very important on and off the grid.
__________________

__________________
John H is offline   Reply With Quote
Old 03-09-2009, 10:24 AM   #17
Senior Member
 
Name: Michael
Trailer: 1993 Bigfoot 17 ftCB / 2011 Toyota Sienna
Ontario
Posts: 207
Sometimes, one of the Xantrex Link 10 or Link 20 Battery Monitoring Systems comes up on that popular web auction site.
I was luckily able to pick up a Link 20 for just over $100 about 2 years ago.
They do magic in monitoring your battery useage, system, etc.
Even at the new price for the Link 1000 and Link 2000 series, there are many applications where they would be worthwhile.
There's several write-ups on this site if you do a search.
However, any volt-amps monitoring is better than none!
Mike .....>
__________________
Michael Pupeza is offline   Reply With Quote
Old 03-10-2009, 09:30 PM   #18
Senior Member
 
Name: George
Trailer: Waiting for the Sprinter van and designing the converion modules.
Oregon
Posts: 629
My set-up on 21' Bigfoot has hardwired generator and inverter monitored by the great Link 10. Switching is semi automatic via transfer relays. Inverter provides power to microwave and all outlets only. My ultimate test was connecting or turning on shore power, generator and inverter all in the same time and the logic of transfer relays worked; I am still a life. My control panel includes switches for 110V water heater, timed wireless jacks, generator, inverter, and Link 10 which I am familiar with since 1997.

George.
Attached Thumbnails
Control_panel.jpg  
__________________
GeorgeR is offline   Reply With Quote
Old 03-16-2009, 02:11 AM   #19
Senior Member
 
peterh's Avatar
 
Name: Peter
Trailer: 2005 19 ft Scamp 19 ft 5th Wheel
Oregon
Posts: 1,519
Registry
I have an update on my original post about installing a volt/amps meter in my trailer. When I started this topic I had just installed the 20 volts/20 amps digital meter I bought on eBay from eBay vendor "e3b6ay5." I didn't mention the vendor name in my post because I was not happy with the original meter they sent me, and they were shipping me a replacement.

I just installed the replacement. It is even less accurate and dependable than the original, with the volts and amps figures dancing all over the place (17v . . . 15v . . . 19v . . . 13v . . . etc) every 1/2 second at times, and when the volts display is undependable, so is the amps display, showing totally unreasonable values (e.g. 2-3 Amps) at times when the only device running is the meter itself; if you then switch some lights on, increasing the amps load, the reading will then drop to a more reasonable value.

So, if you plan to install a volts/amps meter avoid buying your meter from this vendor: e3b6ay5!

--Peter

[quote]When you depend on solar power and a single battery to supply your juice it really helps to know what your battery condition is as well as how fast your are charging/discharging the system. I installed a digital Amps/volts meter and ampere shunt I found on eBay for around $55 so I could get Amps and Volts readings at the push of a button.

Here's a picture of the meter showing the battery is being charged at a rate of 3.18 Amps. There's a round button in the bottom corner of the meter that switches the display from Amps to volts. The switch just under the meter turns the meter on and off.


Attachment 18013


I made a pressboard template of the hole I needed to cut in the side of the cabinet and test-fit my meter in the hole. Then I marked the outline of the hole on the fiberglass withe a fine-point sharpie and scribed just outside the lines with a sharp utility knife to prevent the fiberglass gelcoat from flaking off when I cut the hole. Next I drilled 1/16" holes at all four corners of the opening, and made 1/4" holes next to two of them so I coould get my saw blade in place.

The pictures here shows me using a coping saw hand-tool to cut the opening and a rotary tool (like a Dremel) with a sanding drum to smooth out my cut lines and slightly enlarge the opening in a couple spots. (Wear a dust mask when cutting or sanding fiberglass!)


Attachment 18014


Amp meters require a special device, called a "shunt" to measure the amount of current flowing through the system. One side of the shunt connects to the wire heading to the negative (ground) pole of the battery; the other side connects to the rest of the ground wires for the trailer. An additional wire pair, with one wire connected to each side of the shunt, connects back to the meter.


Attachment 18016
__________________
peterh is offline   Reply With Quote
Old 09-10-2009, 03:55 AM   #20
Member
 
Wilder's Avatar
 
Name: Wilder
Trailer: 1993 Scamp 13 ft
California
Posts: 61
Registry
Hi all,

Thanks for all the great info on the meters, I'll definitely be adding one in the future. However I'm curious about the A/C meters - why are you interested in the voltage and current of the A/C connection? Is this only for the case where you have a generator installed? Otherwise I don't really see the need to know anything about it...?
__________________
Wilder is offline   Reply With Quote
Old 09-10-2009, 01:06 PM   #21
Senior Member
 
Trailer: 2009 Scamp 16 ft / 2003 Durango
Posts: 692
The reason I want to know the AC voltage is if it is low and you have a air conditioner you could burn out the compressor.

Bill K


Hi all,

Thanks for all the great info on the meters, I'll definitely be adding one in the future. However I'm curious about the A/C meters - why are you interested in the voltage and current of the A/C connection? Is this only for the case where you have a generator installed? Otherwise I don't really see the need to know anything about it...?
[/quote]
__________________
Bill K is offline   Reply With Quote
Old 09-10-2009, 04:37 PM   #22
Senior Member
 
Joe Z's Avatar
 
Trailer: Casita
New River AZ
Posts: 1,043
Can somebody tell me if this is a decent enough gauge to measure volts and amp usage ... price seems fair enough but my electrical knowledge is limited...... I'm Mainly looking to see how many amps are remaining in the battery and how many amps are being used at a given time.
thanks,
Joe

http://www.rc-electronics-usa.com/ammeters...ry-monitor.html
__________________

__________________
Joe and Linda
2013 Casita SD
Dodge Ram 4x4
Joe Z is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Bigfoot 17CB Amps? Francine P Problem Solving | Owners Helping Owners 3 06-25-2010 06:15 PM
Managing 12 VOLTS D Tharp Care and Feeding of Molded Fiberglass Trailers 1 09-14-2009 10:49 AM
converting 12 Volts to AC with a Used UPS ? Marty Smiltneek Modifications, Alterations and Updates 3 07-17-2009 03:38 PM
Propane Meter Time K Modifications, Alterations and Updates 23 07-13-2009 07:43 PM
Battery Meter? Legacy Posts Modifications, Alterations and Updates 18 08-22-2003 04:15 PM

» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:01 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.