Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 30-03-2013, 15:47   #1
Moderator
 
Dockhead's Avatar

Cruisers Forum Supporter

Join Date: Mar 2009
Location: Cowes (Winter), Baltic (Summer) (the boat!); somewhere in the air (me!)
Boat: Cutter-Rigged Moody 54
Posts: 19,726
Correct Way to Make a Weatherproof 2 into 1 Wiring Connection?

I have pulled two cables up to my first spreaders for power to my spreader lights, and power to my PTZ camera.

I am very pleased with the cable I finally found (after a torturous Internet search) -- real marine tinned two conductor 16 awg cable encased in a robust PVC waterproof jacket.

But I need to distribute power from one cable to two spreader lights on either side of the mast. I had first thought about pulling separate cables for each side, but it's getting crowded in my mast conduits.

So what is the right way to split the power off to two different fixtures?

The only thing I have been able to think of is to crimp (I have heat seal Molex crimp connectors and a quality Swedish crimp tool) two into one, seal up with a heat gun, then seal again with a heat shrink tube. Then leave the joint inside the mast.

What do you guys think? Is there a better way?
__________________

__________________
Dockhead is offline   Reply With Quote
Old 30-03-2013, 16:31   #2
Zil
Registered User

Join Date: Mar 2013
Location: South Jersey
Posts: 239
Re: Correct Way to Make a Weatherproof 2 into 1 Wiring Connection?

Could you run to port light and then across to starboard.

silicone filled heat shrink is good stuff.
__________________

__________________
Zil is offline   Reply With Quote
Old 30-03-2013, 17:50   #3
Moderator Emeritus
 
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,150
Re: Correct Way to Make a Weatherproof 2 into 1 Wiring Connection?

I like your idea Dockhead. You might finish off the outside of the splice with some liquid electrical tape as a double measure to make sure water stays out.

Permatex 85120 Liquid Electrical Tape, 4 oz : Amazon.com : Automotive.
__________________
David

Life begins where land ends.
David M is offline   Reply With Quote
Old 30-03-2013, 19:11   #4
Registered User
 
Ziggy's Avatar

Join Date: Apr 2008
Location: U.S., Northeast
Boat: Contessa 32
Posts: 1,421
Images: 2
Re: Correct Way to Make a Weatherproof 2 into 1 Wiring Connection?

Quote:
Originally Posted by Dockhead View Post
So what is the right way to split the power off to two different fixtures?
You want one of these:


3-way heat shrink butt splice
__________________
... He knows the chart is not the sea.
-- Philip Booth, Chart 1203
Ziggy is offline   Reply With Quote
Old 30-03-2013, 19:18   #5
Senior Cruiser
 
osirissail's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: A real life Zombie from FL
Boat: Gulfstar 53 - Osiris
Posts: 5,416
Images: 2
Re: Correct Way to Make a Weatherproof 2 into 1 Wiring Connection?

Rather than all that what I do is use a butt splice connector that is large enough to accept both wire ends on the "2-wire" end of the butt connector and then strip back extra insulation on the single wire end, then double the bare wire end back on itself and insert into the butt splice connector. Crimp and seal and cover with adhesive heat shrink.
__________________
osirissail is offline   Reply With Quote
Old 30-03-2013, 19:33   #6
Nearly an old salt
 
goboatingnow's Avatar

Cruisers Forum Supporter

Join Date: Jun 2009
Posts: 13,649
Images: 3
Quote:
Originally Posted by osirissail View Post
Rather than all that what I do is use a butt splice connector that is large enough to accept both wire ends on the "2-wire" end of the butt connector and then strip back extra insulation on the single wire end, then double the bare wire end back on itself and insert into the butt splice connector. Crimp and seal and cover with adhesive heat shrink.
Nasty though. Very difficult to get good crimp strengths

Dave
__________________
Check out my new blog on smart boat technology, networking and gadgets for the connected sailor! - http://smartboats.tumblr.com
goboatingnow is offline   Reply With Quote
Old 30-03-2013, 19:37   #7
Do… or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 9,198
Re: Correct Way to Make a Weatherproof 2 into 1 Wiring Connection?

Quote:
Originally Posted by goboatingnow View Post
Nasty though. Very difficult to get good crimp strengths

Dave
Also not needed because you can simply buy but terminals for a different size wire at each end, like "yellow" at one end and "blue" on the other end. But I don't think these exist with heatshrink so you just add glue-lined heatshrink and that's it.
__________________
s/v Jedi is offline   Reply With Quote
Old 30-03-2013, 19:41   #8
Registered User

Join Date: May 2011
Location: Toronto
Boat: Sandpiper 565
Posts: 2,941
Re: Correct Way to Make a Weatherproof 2 into 1 Wiring Connection?

The key things (in my sometimes humble opinion)
- the cable running up the mast is well supported, so there's no pull on connections
- enough slack that the splices can be made easily and tucked into the mast (and checked/remade in future if necessary)
- the splice should be a crimp-type: butt-splice or cap-splice (my fave)
- heat-shrink and/or sealant to waterproof the connections

[edit] good, strong crimps can be reliably made by anyone using the correct-sized crimp conectors and controlled-cycle (ratcheting) crimpers. ABYC specifies 'pull' strengths that a proper crimped connection must be able to withstand.
__________________
Lake-Effect is offline   Reply With Quote
Old 30-03-2013, 19:49   #9
Nearly an old salt
 
goboatingnow's Avatar

Cruisers Forum Supporter

Join Date: Jun 2009
Posts: 13,649
Images: 3
I'd have to say, this is one of thoses situations I be tempted to solder. Slide in a piece of adhesive lined heat shrink, strip the main wire to expose piece , twist on additional conductor, solder , heat shrink into a Y

I dont like crimps that can't be inspected.

Dave
__________________
Check out my new blog on smart boat technology, networking and gadgets for the connected sailor! - http://smartboats.tumblr.com
goboatingnow is offline   Reply With Quote
Old 30-03-2013, 19:49   #10
Senior Cruiser
 
osirissail's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: A real life Zombie from FL
Boat: Gulfstar 53 - Osiris
Posts: 5,416
Images: 2
Re: Correct Way to Make a Weatherproof 2 into 1 Wiring Connection?

Quote:
Originally Posted by goboatingnow View Post
Nasty though. Very difficult to get good crimp strengths
Dave
Maybe for you, but not for me as I use the correct crimping tool. The crimp is as good and as strong as any single/double wire butt connector crimp. Skill makes it easy along with reducing the variety of sizes of butt terminals you need to stock. Everybody to their own opinions . . .

Officially for one to two or more wire junctions a terminal board with ring terminals is proper. But in situations like cross-overs from one mast spreader light to the other "Zil" (post #2) has the best suggestion. Then you do not have a "floating" connection somewhere inside the mast tube where it would be very difficult to get to service/inspect.
__________________
osirissail is offline   Reply With Quote
Old 30-03-2013, 19:52   #11
Nearly an old salt
 
goboatingnow's Avatar

Cruisers Forum Supporter

Join Date: Jun 2009
Posts: 13,649
Images: 3
Quote:
Originally Posted by osirissail View Post

Maybe for you, but not for me as I use the correct crimping tool. The crimp is as good and as strong as any single/double wire butt connector crimp. Skill makes it easy along with reducing the variety of sizes of butt terminals you need to stock. Everybody to their own opinions . . .
No I meant that placing two conductors into a crimp designed for one, tends to lead to deformed crimps. Also doubling up the wire to utilise a crimp that's designed for bigger conductors isn't a good idea , but as Nick says you can get non symmetrical but crimps

Dave
__________________
Check out my new blog on smart boat technology, networking and gadgets for the connected sailor! - http://smartboats.tumblr.com
goboatingnow is offline   Reply With Quote
Old 30-03-2013, 19:57   #12
Registered User

Join Date: May 2011
Location: Toronto
Boat: Sandpiper 565
Posts: 2,941
Re: Correct Way to Make a Weatherproof 2 into 1 Wiring Connection?

Quote:
Originally Posted by goboatingnow View Post
I dont like crimps that can't be inspected.
Dave
100% agree. I never like to bury a connection, of any kind.
__________________
Lake-Effect is offline   Reply With Quote
Old 30-03-2013, 19:58   #13
Guy
Registered User

Join Date: Feb 2013
Location: So. Oregon, USA
Boat: Seafarer36c
Posts: 4,308
Re: Correct Way to Make a Weatherproof 2 into 1 Wiring Connection?

There is no way. You need to run another wire from a location in the boat where you can have a splice or a terminal.
__________________
Guy is offline   Reply With Quote
Old 30-03-2013, 20:16   #14
Nearly an old salt
 
goboatingnow's Avatar

Cruisers Forum Supporter

Join Date: Jun 2009
Posts: 13,649
Images: 3
Just thinking Dockhead. Why not run to one side and wire to the lamps then run a wire across to the other side. That way , there's no buried splices as they are interconnected at the lamp terminals and can be inspected.

Can you get a wire across the mast ?

Dave
__________________
Check out my new blog on smart boat technology, networking and gadgets for the connected sailor! - http://smartboats.tumblr.com
goboatingnow is offline   Reply With Quote
Old 30-03-2013, 21:06   #15
Do… or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 9,198
Re: Correct Way to Make a Weatherproof 2 into 1 Wiring Connection?

Quote:
Originally Posted by goboatingnow View Post
Just thinking Dockhead. Why not run to one side and wire to the lamps then run a wire across to the other side. That way , there's no buried splices as they are interconnected at the lamp terminals and can be inspected.

Can you get a wire across the mast ?

Dave
That is what Zil wrote in post #2
__________________

__________________
s/v Jedi is offline   Reply With Quote
Reply

Tags
wiring

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




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 09:09.


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.