Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-24-2018, 09:03 AM   #1
Guru
 
firstbase's Avatar
 
City: Jupiter, Florida
Country: United States
Vessel Name: Black Eyed Susan
Vessel Model: Grand Banks 42' Classic
Join Date: Nov 2016
Posts: 1,195
Finding first 120v receptacle in circuit?

Any easier way to determine which is the first receptacle in a series of 4 besides opening one up and loosing the wiring to see what happens with the others? Tried tracing the wires and they go down into never never land and can't see where they go. Looking to add GFCI and my understanding is that they need to be the first in the circuit (despite a "Marine Electrician" telling me they can go anywhere in the circuit).
__________________
Advertisement

__________________
Hal
BLACK EYED SUSAN
Grand Banks 42 Classic
firstbase is offline   Reply With Quote
Old 11-24-2018, 09:49 AM   #2
Guru
 
djmarchand's Avatar
 
City: Litchfield, Ct/Punta Gorda, Fl
Country: USA
Vessel Model: Atlas Pompano 23- outboard
Join Date: Aug 2012
Posts: 4,414
I don't know of any easier way than loosing a wire and see which ones aren't hot anymore. And it is often difficult to tell which one is the supply and load side of the connections so you have to measure for voltage once you disconnect.


You are correct, the GFCI only protects the circuits downstream of it

David
__________________

djmarchand is offline   Reply With Quote
Old 11-24-2018, 10:11 AM   #3
Guru
 
City: Fairport
Country: United States
Join Date: Jan 2017
Posts: 1,407
Quote:
Originally Posted by firstbase View Post
Any easier way to determine which is the first receptacle in a series of 4 besides opening one up and loosing the wiring to see what happens with the others? Tried tracing the wires and they go down into never never land and can't see where they go. Looking to add GFCI and my understanding is that they need to be the first in the circuit (despite a "Marine Electrician" telling me they can go anywhere in the circuit).
Its easy. Plug in a high load device, like a space heater. Take a DMM on AC range and look for the highest V recept. That is #1.. in order of V to last.
diver dave is online now   Reply With Quote
Old 11-24-2018, 10:45 AM   #4
Guru
 
firstbase's Avatar
 
City: Jupiter, Florida
Country: United States
Vessel Name: Black Eyed Susan
Vessel Model: Grand Banks 42' Classic
Join Date: Nov 2016
Posts: 1,195
Thanks guys. Just got lucky by taking out the one I suspected was first on one circuit and was correct. On to my next issue which is the receptacle is on the back of the lower helm seat. Not deep enough for the larger GFCI. Receptacle is tucked in the corner out of the way so it seems like my best choice would be a teak spacer to give me more depth. don't need too much. Back home to the table saw. Will check the second circuit first to make sure I don't need two spacers. Wow. I actually thought ahead. Never happens to me on the boat.
__________________
Hal
BLACK EYED SUSAN
Grand Banks 42 Classic
firstbase is offline   Reply With Quote
Old 11-24-2018, 10:55 AM   #5
Guru
 
tiltrider1's Avatar
 
City: Seattle
Country: USA
Vessel Name: AZZURRA
Vessel Model: Ocean Alexander 54
Join Date: Aug 2017
Posts: 1,192
If you ever wanted an excuse to buy a 3D printer. You have it now.
tiltrider1 is offline   Reply With Quote
Old 11-24-2018, 11:02 AM   #6
Veteran Member
 
Ejdakins's Avatar
 
City: Pentiction
Country: Canada
Vessel Name: Bluefin
Join Date: Oct 2018
Posts: 39
Put GFI in the electrical Panel, all down stream are protected.
Ejdakins is offline   Reply With Quote
Old 11-24-2018, 11:10 AM   #7
Guru
 
firstbase's Avatar
 
City: Jupiter, Florida
Country: United States
Vessel Name: Black Eyed Susan
Vessel Model: Grand Banks 42' Classic
Join Date: Nov 2016
Posts: 1,195
Quote:
Originally Posted by Ejdakins View Post
Put GFI in the electrical Panel, all down stream are protected.
OK, time out. Do you mean a GFI breaker on the panel? If so then maybe it is already installed? How would I check? They would look different than a regular breaker? Backing up even more, how do you check to see if GFI is installed in a circuit to begin with?
__________________
Hal
BLACK EYED SUSAN
Grand Banks 42 Classic
firstbase is offline   Reply With Quote
Old 11-24-2018, 11:11 AM   #8
Guru
 
firstbase's Avatar
 
City: Jupiter, Florida
Country: United States
Vessel Name: Black Eyed Susan
Vessel Model: Grand Banks 42' Classic
Join Date: Nov 2016
Posts: 1,195
Quote:
Originally Posted by tiltrider1 View Post
If you ever wanted an excuse to buy a 3D printer. You have it now.
Hopefully my son doesn't read this as he wants one so bad it hurts as they say.
__________________
Hal
BLACK EYED SUSAN
Grand Banks 42 Classic
firstbase is offline   Reply With Quote
Old 11-24-2018, 12:04 PM   #9
Senior Member
 
City: Boston
Country: US
Vessel Model: IG 30
Join Date: Nov 2016
Posts: 420
Quote:
Originally Posted by firstbase View Post
OK, time out. Do you mean a GFI breaker on the panel? If so then maybe it is already installed? How would I check? They would look different than a regular breaker? Backing up even more, how do you check to see if GFI is installed in a circuit to begin with?
1) Look for a Push To Test button. or 2) Buy a GFCI circuit tester at Amazon. $5.00 or 3) fill up your sink and drop your toaster into it.
SoWhat is offline   Reply With Quote
Old 11-24-2018, 12:07 PM   #10
Guru
 
firstbase's Avatar
 
City: Jupiter, Florida
Country: United States
Vessel Name: Black Eyed Susan
Vessel Model: Grand Banks 42' Classic
Join Date: Nov 2016
Posts: 1,195
Quote:
Originally Posted by SoWhat View Post
1) Look for a Push To Test button. or 2) Buy a GFCI circuit tester at Amazon. $5.00 or 3) fill up your sink and drop your toaster into it.
1) I'm talking about on the panel. Would a breaker on the panel have the test function like a GFCI receptacle? 2) GFCI circuit tester. Huh. Go figure. Didn't realize those tested for GFCI as well as simple power/ground. 3) Don't keep a toaster on the boat. Would a heat gun work?

As an electrician I make a good pastry chef.
__________________
Hal
BLACK EYED SUSAN
Grand Banks 42 Classic
firstbase is offline   Reply With Quote
Old 11-24-2018, 12:46 PM   #11
Senior Member
 
City: Boston
Country: US
Vessel Model: IG 30
Join Date: Nov 2016
Posts: 420
Quote:
Originally Posted by firstbase View Post
1) I'm talking about on the panel. Would a breaker on the panel have the test function like a GFCI receptacle? 2) GFCI circuit tester. Huh. Go figure. Didn't realize those tested for GFCI as well as simple power/ground. 3) Don't keep a toaster on the boat. Would a heat gun work?
As an electrician I make a good pastry chef.
All GFCI/AFCI breakers have test/reset button.
Heat gun would be fine. (Stick to baking.)

Note that you could add another outlet and make it the first one in the circuit with a little rewiring. Panel update is first choice if you have good access to buses behind the panel. If wiring is a spaghetti nest then I might opt for new outlet.
__________________

SoWhat is offline   Reply With Quote
Reply

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





All times are GMT -5. The time now is 06:27 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012