Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 08-11-2022, 18:40   #1
Registered User

Join Date: Dec 2009
Location: Australia
Boat: BUILT!!! Roberts Mauritius 43ft
Posts: 3,602
Wiring up the 24V Muir electric winch

I'm about to wire up the 24V electric winch. I have all the very heavy cabling in place and the isolation switch and circuit breaker are in place. (I'm buying the appropriate sized cable lugs today as well as a 3A circuit breaker nominated in the circuit diagram)

Now I plan to wire up the UP/DOWN rocker switch in the cockpit. It needs to be a X3 cored cable and I'm thinking of using a 240V AC 10A cable.

My calculations tell me the cable could not handle 3A load (The cable would be rated for domestic use at 240V AC 10A). But my observation tells me otherwise.

Please advise!
Attached Thumbnails
Click image for larger version

Name:	Screenshot 2022-11-09 at 10-37-38 VR_VRC_850_900_1000_1200_1250_2200_Manual_(2016).pdf.png
Views:	34
Size:	64.6 KB
ID:	266989  
coopec43 is offline   Reply With Quote
Old 08-11-2022, 22:17   #2
Registered User

Join Date: Dec 2009
Location: Australia
Boat: BUILT!!! Roberts Mauritius 43ft
Posts: 3,602
Re: Wiring up the 24V Muir electric winch

Thinking a bit more about it.

The cable could handle a 2400W load. (240V X 10A) as per manufacturers warranty.

Therefore the cable should be able to handle 240W (24V X 10A). Since the circuit breaker (or fuse) is only rated at 3A the load must less than 72W. (24V X 3A) So the cable could handle X3 times the load.

How am I going?
coopec43 is offline   Reply With Quote
Old 08-11-2022, 22:22   #3
Registered User

Join Date: Jun 2013
Location: canada
Posts: 4,642
Re: Wiring up the 24V Muir electric winch

just pick up a 16/3 tined marine cable. whatever that is in mm. that's probaly what your 10a cable is.

cable is rated in amps.

the 10a cable can handle 10a. in 24v or 230v. there is no need to cacl watts.
smac999 is offline   Reply With Quote
Old 08-11-2022, 22:48   #4
Registered User

Join Date: Dec 2009
Location: Australia
Boat: BUILT!!! Roberts Mauritius 43ft
Posts: 3,602
Re: Wiring up the 24V Muir electric winch

Quote:
Originally Posted by smac999 View Post
just pick up a 16/3 tined marine cable. whatever that is in mm. that's probaly what your 10a cable is.

cable is rated in amps.

the 10a cable can handle 10a. in 24v or 230v. there is no need to cacl watts.

Yep! I can see that now.

It's the first time I'm about to use a 240V AC cable on my 24V DC cabling so I'm still crawling.

Thanks.
coopec43 is offline   Reply With Quote
Old 09-11-2022, 03:22   #5
Moderator and Certifiable Refitter
 
Wotname's Avatar

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: C.L.O.D.
Posts: 20,304
Re: Wiring up the 24V Muir electric winch

Quote:
Originally Posted by coopec43 View Post
...........
Now I plan to wire up the UP/DOWN rocker switch in the cockpit. It needs to be a X3 cored cable and I'm thinking of using a 240V AC 10A cable.
.................
Quote:
Originally Posted by coopec43 View Post
..........

It's the first time I'm about to use a 240V AC cable on my 24V DC cabling so I'm still crawling.

Thanks.
There is no requirement for 3 cored cable. Three single wires will work just as well as will a twin core plus a single wire. The only reason to use a multicore cable is for ease of running the wiring. You could use 3 single wires and fit them into expandable sleeving or in spiral warp or just cable tie together etc. You could use 5 core trailer cabling and have two spare conductors.

Using 240V AC cabling for a 24V DC circuit is a really really a third rate amateur option. Electrically it will work but the industry goes to great lengths to keep high voltage AC circuits isolated from low voltage DC circuits (for obvious reasons). Using what is clearly a high voltage AC cable in a low voltage DC circuit flies in the face of all conventions; I implore you to reconsider...
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is online now   Reply With Quote
Old 09-11-2022, 03:31   #6
Moderator and Certifiable Refitter
 
Wotname's Avatar

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: C.L.O.D.
Posts: 20,304
Re: Wiring up the 24V Muir electric winch

This stuff (expandable sleeving) is your friend
https://www.ebay.com.au/itm/32461525...BoCzYwQAvD_BwE

and

https://www.jaycar.com.au/expandable...xoCiEwQAvD_BwE

use some heat shrink on the ends to keep everything tidy.
If you hunt around, you can also find similar products in a fire proof material.
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is online now   Reply With Quote
Old 09-11-2022, 03:36   #7
Moderator and Certifiable Refitter
 
Wotname's Avatar

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: C.L.O.D.
Posts: 20,304
Re: Wiring up the 24V Muir electric winch

Even better 3 Core Silicone Sheathed Cable Wire Flexible Tinned Copper Power Cable
https://www.ebay.com.au/itm/17510050...xoCNxUQAvD_BwE

or 3 core trailer cable
https://www.ebay.com.au/itm/23314315...RoChnYQAvD_BwE
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is online now   Reply With Quote
Old 09-11-2022, 03:49   #8
Registered User

Join Date: Dec 2009
Location: Australia
Boat: BUILT!!! Roberts Mauritius 43ft
Posts: 3,602
Re: Wiring up the 24V Muir electric winch

OK, OK Wotname, you win.

I've been buying all my cable online (eBay) but I want the winch operating on Friday so I'll probably buy from Jaycar.

As an aside what do you think of these? Would I be wasting my money? (I think I know the answer already) AU $3.54 - 7.41 / lot (80 Pieces)


https://www.aliexpress.com/item/3290...8daBvm8dv&mp=1

coopec43 is offline   Reply With Quote
Old 09-11-2022, 03:50   #9
Registered User

Join Date: Mar 2022
Location: Ontario Canada
Boat: Jeanneau SO 389
Posts: 1,969
Re: Wiring up the 24V Muir electric winch

I’m confused. It happens are you running heavy cable from the switch to the motor don’t. You can run 18 or even wireless. Pretty relays waiting to do the heavy lifting.
I have an old anchor roller and relays I’m trying to give away. It needs a new 24V motor. The switch only had 12V and 12V 5amp fuse. The one in the current boat is way nicer and has the hand crank. In both cases the battery’s for the fore gear are in the bow. The 3rd house bank. If you are running battery power from aft you are going to add a couple hundred pounds of copper.
In street lighting we run 347V to increase the number of fixtures and the distance vs 120V.
The US uses 277V for a similar benefit. Now with LED electronic controls we have metric tons of copper in the ground where we no longer need it.
Rumrace is offline   Reply With Quote
Old 09-11-2022, 03:56   #10
Registered User

Join Date: May 2022
Posts: 760
Re: Wiring up the 24V Muir electric winch

Quote:
Originally Posted by coopec43 View Post
OK Wotname, you win.

I've been buying all my cable online (eBay) but I want the winch operating on Friday so I'll probably buy from Jaycar.

As an aside what do you think of these? Would I be wasting my money? (I think I know the answer already)

https://www.aliexpress.com/item/3290...8daBvm8dv&mp=1
Those are NOT acceptable. Wire terminals should have CLOSED ends to insert the wire into, be heavy enough to properly crimp in place, and should be tinned to protect from corrosion.

This article is probably way more into the weeds than you are interested in, but making proper connections on high amperage wires is IMPORTANT. Crappy connections start fires. At the very least, read this one and follow his recommendations.: https://marinehowto.com/making-your-own-battery-cables/
ItDepends is offline   Reply With Quote
Old 09-11-2022, 04:26   #11
Registered User

Join Date: Dec 2009
Location: Australia
Boat: BUILT!!! Roberts Mauritius 43ft
Posts: 3,602
Re: Wiring up the 24V Muir electric winch

Quote:
Originally Posted by ItDepends View Post
Those are NOT acceptable. Wire terminals should have CLOSED ends to insert the wire into, be heavy enough to properly crimp in place, and should be tinned to protect from corrosion.

This article is probably way more into the weeds than you are interested in, but making proper connections on high amperage wires is IMPORTANT. Crappy connections start fires. At the very least, read this one and follow his recommendations.: https://marinehowto.com/making-your-own-battery-cables/
Thanks for that: I won't go any further with the idea. (The ones I am using are nice shiny silver lugs and cost a few dollars each)
coopec43 is offline   Reply With Quote
Old 09-11-2022, 04:44   #12
always in motion is the future
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 18,866
Re: Wiring up the 24V Muir electric winch

Here, this is only $18, ready for 24V, completely wireless and you get 2 remotes! Just hang one in the cockpit

https://www.amazon.com/gp/product/B081YS7ZSX
__________________
“It’s a trap!” - Admiral Ackbar.

s/v Jedi is online now   Reply With Quote
Old 09-11-2022, 15:02   #13
Registered User

Join Date: Dec 2009
Location: Australia
Boat: BUILT!!! Roberts Mauritius 43ft
Posts: 3,602
Re: Wiring up the 24V Muir electric winch

Quote:
Originally Posted by s/v Jedi View Post
Here, this is only $18, ready for 24V, completely wireless and you get 2 remotes! Just hang one in the cockpit

https://www.amazon.com/gp/product/B081YS7ZSX

Thanks for that. I'll look at them but after get the yacht in the water
coopec43 is offline   Reply With Quote
Old 09-11-2022, 15:13   #14
Registered User
 
Fore and Aft's Avatar

Join Date: Jan 2015
Location: Gympie
Boat: Volkscruiser
Posts: 2,668
Re: Wiring up the 24V Muir electric winch

SV Jedi those remotes work really well, here in Australia the most common ones you see are exactly the same and have a blue casing. We have been using ours for four years without a problem. Probably 15% of the boats I survey use them.
Cheers
Fore and Aft is online now   Reply With Quote
Reply

Tags
electric, wiring, winch

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
IInstallation of Muir VRC1250 Anchor winch. coopec43 Electrical: Batteries, Generators & Solar 2 30-11-2018 22:12
Muir Hercules Manual Winch - How Do I Lube it ? charliehows Anchoring & Mooring 11 14-05-2016 16:58
Muir Thor winch rebuild pdbms Auxiliary Equipment & Dinghy 7 28-06-2013 22:40
Muir Cougar Horizontel Anchor Winch.... reiner Anchoring & Mooring 4 26-03-2013 16:45
muir hercules manual winch - update charliehows Anchoring & Mooring 0 07-07-2012 19:12

Advertise Here


All times are GMT -7. The time now is 15:24.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.