Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 16-11-2009, 13:23   #1
Registered User

Join Date: Jul 2009
Posts: 31
Inverter Connection

good day all
i have a 2000watt invertor setup standalone in my boat. i would like to wire it into the existing 110 system but want to make sure its protected. i know i can go out spend money and buy a dedicated transfer switch but was wondering i have a 30 amp dual pole breaker already can i not use this as an on/off switch. just want to make sure that if the invertor was to accidently be turned on while the shore power was connected that nothing would get fried. thanks
__________________

__________________
davevancat is offline   Reply With Quote
Old 17-11-2009, 16:52   #2
Registered User

Join Date: Jul 2009
Posts: 31
no one not one response come on all you electrical wizards can someone please share any imput thanks
__________________

__________________
davevancat is offline   Reply With Quote
Old 17-11-2009, 17:05   #3
Senior Cruiser
 
Blue Stocking's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 4,117
What brand and model? Is it an Inverter/charger?
__________________
Blue Stocking is offline   Reply With Quote
Old 17-11-2009, 17:08   #4
cruiser

Join Date: Aug 2006
Posts: 205
Quote:
Originally Posted by davevancat View Post
good day all
i have a 2000watt invertor setup standalone in my boat. i would like to wire it into the existing 110 system but want to make sure its protected. i know i can go out spend money and buy a dedicated transfer switch but was wondering i have a 30 amp dual pole breaker already can i not use this as an on/off switch. just want to make sure that if the invertor was to accidently be turned on while the shore power was connected that nothing would get fried. thanks
Sooner or later you will forget. You may damage you or someone you love, your boat, the inverter, and may kill someone from voltage fed from your inverter into the mains.

Get a transfer switch and do it right. Remember what B O A T stands for. Can you run all juice thru the inverter?

My dad backfeeds his genny into the house during a power outage and I tell him all of this but hey what do I know? I worry about him .....
__________________
Noname1 is offline   Reply With Quote
Old 17-11-2009, 18:06   #5
Registered User
 
sailvayu's Avatar

Join Date: Mar 2006
Location: Fort Myers FL
Boat: Irwin 40
Posts: 878
Any "MARINE" inverter will have an automatic transfer switch. If it is not a marine unit take it back get your money back and get a marine unit. There are several reasons for this safety being the biggest. You cannot simpley tie into your present shore power system without knowing what you are doing or you could hurt or kill someone. You also need to understand you loads and useage. I recomend you hire a ABYC certified tech to at least consult with you on the installation. You do not want to fool around with 120 VAC if you do not know what you are doing. Inverters need there own neutral buses, they need to be seperated from redudant loads and heavy loads like battery chargers and water heaters. I strongly urge you to get some help from a professional on this one.

Wayne Canning, AMS
projectboatzen.com
__________________
sailvayu is offline   Reply With Quote
Old 17-11-2009, 18:44   #6
Senior Cruiser
 
Sailmonkey's Avatar

Cruisers Forum Supporter

Join Date: Sep 2009
Location: Houston
Boat: '76 Allied Seawind II, 32'
Posts: 5,781
I have a "marine" inverter, 1500 watt that doesn't have an automatic transfer switch. It's also not a charger.

If you want to do this without a transfer switch, you'll need at least two breakers, and a sliding lockout.
But as said above, if you're not sure about what you're doing........
__________________
Sailmonkey is online now   Reply With Quote
Old 17-11-2009, 20:35   #7
Moderator Emeritus
 
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,152
Really the safest "child proof" way of doing it is to have a transfer switch with A-Off-B positions. There is no way you can mess it up. You can even work on your AC system (downstream of the switch) by putting it in the Off position and be assured that you are not going to get electrocuted.
__________________
David

Life begins where land ends.
David M is offline   Reply With Quote
Old 18-11-2009, 06:52   #8
Registered User

Join Date: Jul 2009
Posts: 31
thanks everyone guess i should have been more specific
the invertor is a xantrek 2000 watt invertor only no charger, it does not have a built in transfer switch but many "marine invertors" ive seen advertised do not as well. right now the invertor is standalone when im off the dock needed some 110 i have a short extension cord male to male that backfeeds in through one of my 110 outlets. the battery charger is isolated from this feed. i thought that using my dp 30amp breaker with a breaker lockout plate would essentially be the same as a transfer switch the hot and neutral would be isolated. am i wrong in my assumption here. thanks for the replies
__________________
davevancat is offline   Reply With Quote
Old 18-11-2009, 06:54   #9
Registered User

Join Date: Jul 2009
Posts: 31
and yes i do understand that a true transfer switch is the best way to go but just trying to keep costs down but perhaps this isnt the best way to do so.
__________________
davevancat is offline   Reply With Quote
Old 18-11-2009, 07:37   #10
Registered User
 
nikki-m's Avatar

Join Date: Jun 2009
Location: Jersey, Channel Islands
Boat: Beneteau 393
Posts: 36
You're using a male-male transfer lead???? Seriously??? You think that's a safe option? And suppose some-one innocently unplugs the "live" end and touches the exposed pins?? I wouldn't condone this sort of connection anywhere, boat or home!
__________________
nikki-m is offline   Reply With Quote
Old 18-11-2009, 11:09   #11
Commercial Member
 
CharlieJ's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: St. Petersburg, FL
Boat: Gulfstar Long Range Trawler; 53'; BearBoat
Posts: 837
As said above but maybe in a slightly different way: The requirement is to allow only a single source of AC to be providing power to a panel at any time. Positive control of the available sources of AC is required.

You have two choices for correctly and safely wiring this inverter; either install a source selector switch with Inverter-Off-Shorepower positions OR have two (one for inverter output and one for shorepower) separate 30 amp double pole circuit breakers with a mechanical gate that only allows one of the two sources to be selected at a time.
__________________
Charlie Johnson
JTB Marine Corporation
"The Devil is in the details and so is salvation."
CharlieJ is offline   Reply With Quote
Old 18-11-2009, 16:05   #12
Registered User

Join Date: Jul 2009
Posts: 31
well nikki-m seeing how im the only one on the boat and that the invertor and the backfed 110 plug are in a secured locker i didnt see the harm. thanks charliej all i wanted to know was if i could use an additional 2pole 30 amp breaker with a lockout now that i know i can use it without frying the invertor i will hardwire the plug in to the new breaker. thanks
__________________

__________________
davevancat is offline   Reply With Quote
Reply

Tags
inverter

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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
Chain to Rope Connection Firehoser75 Anchoring & Mooring 20 15-09-2011 17:05
Resistance per connection Extemporaneous Electrical: Batteries, Generators & Solar 6 20-02-2009 21:57
SSB Tuner Connection. AnchorageGuy Marine Electronics 22 17-01-2009 08:26
Raymarine E80 to T.V. connection hbarth Marine Electronics 8 11-04-2007 15:20
Tachometer connection ScratchBC Engines and Propulsion Systems 4 21-05-2006 18:50



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 05:59.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.