Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
 
 


Reply
 
Thread Tools Display Modes
 
Old 12-19-2020, 11:51 PM   #81
Platinum Member
 
Join Date: Aug 2010
Location: Minnesota
Posts: 12,427
Default

Quote:
Originally Posted by RoadToad@live.com View Post
Not being confrontational here. I have the utmost respect for the obvious knowledge of Booster, Marco, other Forum members.
Not withstanding failure mode scenarios, I just literally do not see the switched Gnd issue.

I don't think anyone has said the switching of hot and neutral was not a safe way to go. Are there some likely very rare circumstances that having ground also switched might save someone, probably, but in general there are others because of no earth ground issues that are more likely.


I hope there is no confusion here about what a 3 input transfer switch is. What it isn't referring to in my statements is a 3 wire switching unit. What it is referring to is a unit that will handle automatic switching by priority of 3 separate power sources, which in most cases are shore, genny, and onboard inverter.
booster is offline   Reply With Quote
Old 12-20-2020, 03:58 AM   #82
Platinum Member
 
Join Date: Sep 2020
Location: The Villages
Posts: 115
Default

Quote:
Originally Posted by booster View Post
I don't think anyone has said the switching of hot and neutral was not a safe way to go. Are there some likely very rare circumstances that having ground also switched might save someone, probably, but in general there are others because of no earth ground issues that are more likely.


I hope there is no confusion here about what a 3 input transfer switch is. What it isn't referring to in my statements is a 3 wire switching unit. What it is referring to is a unit that will handle automatic switching by priority of 3 separate power sources, which in most cases are shore, genny, and onboard inverter.
Yes, I admire that 3 way box you identified (except for the price lol).
We're good here.
Thank you all for the engaging conversation.
__________________
2003 Chevy Roadtrek 190 Versatile
78000 mi
Road Toad is offline   Reply With Quote
Old 03-16-2021, 04:00 AM   #83
Platinum Member
 
Join Date: Jun 2017
Location: Oregon, Washington, Arizona and California
Posts: 245
Default

Forgive me if I interject this without reading the whole thread.

A 3 pole three position (on1-off-on2) MANUAL transfer switch can be had for $19 or so.

https://www.amazon.com/Terminals-Pos...dp/B07W6TBL71/

So a 30 amp service transfer switch with a switched neutral and permanent bond at the inverter is an easy task. There's no reason to disconnect the ground, you're just introducing a failure mode you don't ever want.
Nic7320 is offline   Reply With Quote
Old 03-16-2021, 04:31 AM   #84
Platinum Member
 
engnrsrule's Avatar
 
Join Date: Feb 2018
Location: VA
Posts: 344
Default

Quote:
Originally Posted by Nic7320 View Post
Forgive me if I interject this without reading the whole thread.

A 3 pole three position (on1-off-on2) MANUAL transfer switch can be had for $19 or so.

https://www.amazon.com/Terminals-Pos...dp/B07W6TBL71/

So a 30 amp service transfer switch with a switched neutral and permanent bond at the inverter is an easy task. There's no reason to disconnect the ground, you're just introducing a failure mode you don't ever want.
My configuration needs 2 30 amp transfer switches (or a 3-input switch). I would not want to have to flip manual switches. 1st switch - shore tie (priority) or generator; 2nd switch - Output of 1st switch (priority) or inverter. Additionally the feed for battery charger taps off 1st switch output. This prevents the inverter from powering the battery charger (creating a self-licking ice cream cone). While this arrangement sends inverter power to the full 110v panel, I know what each source can and can't carry. I cannot run the AC if shore tie is a 15 amp outlet from the house. I can't run the AC or microwave on the inverter. In either case I will trip a source breaker.
engnrsrule is offline   Reply With Quote
Old 03-16-2021, 04:46 AM   #85
Platinum Member
 
Join Date: Jun 2017
Location: Oregon, Washington, Arizona and California
Posts: 245
Default

Seems like this is a pretty common need amongst RV'ers.
We need a 3 source (auto or manual) transfer switch that doesn't break the bank.
But if your rig already has an ATS for the generator, then you don't need to select from 3 sources, only the remaining two. I'll assume you're well on your way with that.

And how did I end up on a thread from December? I was looking for something else.
Nic7320 is offline   Reply With Quote
Old 03-16-2021, 05:12 AM   #86
Platinum Member
 
engnrsrule's Avatar
 
Join Date: Feb 2018
Location: VA
Posts: 344
Default

The 2nd switch I added was very similar to the original switch. I purchased on Amazon for $92. A single 3 input switch would prevent me from tapping of the power for the battery charger, and necessitate a relay to isolate it when the inverter was running. I think the nesting of 2 ATS's is preferable considering cost and reliability, and a pretty common configuration. The ATS connected to the generator should have a delay integral to the switching process.

Post #39 of this thread has a diagram of my layout.

https://www.amazon.com/dp/B00F84S3KM/
engnrsrule is offline   Reply With Quote
Old 09-05-2021, 07:40 PM   #87
Platinum Member
 
engnrsrule's Avatar
 
Join Date: Feb 2018
Location: VA
Posts: 344
Default Update to some incorrect information

I have another thread up that talks about my GFCI issue. It was NOT a Tripplite problem. Turns out there was a neutral to ground short in the 110 side of the hot water heater. The thread also outlines an easy way to ensure different 110v source are appropriately establishing neutral ground bond when connected and breaking the bond when not connected. My inverter meets this goal.

To view this thread click https://www.classbforum.com/forums/f...tie-12375.html
engnrsrule is offline   Reply With Quote
Old 05-16-2024, 10:12 PM   #88
Platinum Member
 
engnrsrule's Avatar
 
Join Date: Feb 2018
Location: VA
Posts: 344
Default Inverter can now power the Keurig

The upgraded inverter required 150a protection for the feed from the battery. On my original installation of this upgrade I chose a 150a DC breaker. I found that this breaker would trip if I ran the Keurig, even though this load should have been within the rating.

I had noticed some negative reviews on these breakers, notably that they were not consistent at carrying their rated load

I decided to try changing to a fuse and now the Keurig works on inverter.
engnrsrule 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


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 07:33 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.