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The Norfolk Broads Forum / Broads Boat Owners Q & A / Electric windlass advice
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Posted By Discussion Topic: Electric windlass advice

Similar Threads That Might Help :
Electric Windlass / winch| Electric Windlass / winch| outboard - electric start - advice sought| Advice on electric hook-ups| Advice on electric hook-ups|

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dannyb1
Apr-28-2013 @ 9:15 PM                           Permalink
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Hi all

I am hoping to fit an electric anchor winch to my boat in the near future, rather than having to install another battery or do a long run of wiring i am wondering if it would be safe to connect up the power feed for the winch to the heavy duty terminals on the bowthruster obviously via a suitable fuse. Is this likely to cause me any issues? plan b is to put another battery near the bowthruster if thats not possible and run them both from it but it would still be part of the main bank anyway. I currently have the engine and thruster off 1x110 and domestics/inverter excluding heater/fridge off 2x110s but the bank becomes one when charging.

Any advice would be greatfully recieved if this makes sense, a 24v winch could also be possible and actually easier than fitting anymore 12v's, my 24v bank is 110amp hr.

Cheers
Danny

Jeremy-Aslan
Apr-28-2013 @ 11:15 PM                           Permalink
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An electric winch is obviously going to take a fair bit of current, so your would need pretty thick cables and/or having the battery and winch not too far apart.  If you have heavy duty cabling to your bow thruster (in the same part of the boat), I would think that feeding the winch off the same supply would make sense.  As you say that shares a battery with the starter, it would be appropriate to make sure you only ever use the winch with the engine running, but this would be pretty likely, anyway.

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dannyb1
Apr-28-2013 @ 11:26 PM                           Permalink
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Thanks for advice, there is heavy duty cable all the way from batteries in centre of boat to the bowthruster motor!

I am concerned of an overload issue say for example if the winch and thruster were used at the same time ....again unlikely but you have to think of everything where safety is concerned!

Thruster draws 405amps according to spec sheet.

Cheers Danny



dannyb1
Apr-28-2013 @ 11:26 PM                           Permalink
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Thanks for advice, there is heavy duty cable all the way from batteries in centre of boat to the bowthruster motor!

I am concerned of an overload issue say for example if the winch and thruster were used at the same time ....again unlikely but you have to think of everything where safety is concerned!

Thruster draws 405amps according to spec sheet.

Cheers Danny



Regulo
Apr-29-2013 @ 9:48 AM                           Permalink
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Danny,

Exactly the same set-up as on my boat, except I ran a separate feed via the circuit-breaker supplied with the winch (a Sprint 500) directly from the main feed to the fuse panel, which was much heavier than the cable supplied with the winch. I only ever use the winch when the engine is running, so no problems with lack of current. Had this set-up for 10 years and had no problems at all.

Regards, Ray.

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rustic
Apr-29-2013 @ 1:03 PM                           Permalink
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You could interlock the low current side of the winch control circuit, so that if the thruster is on, it activates a small relay and using the normally closed contacts, for the winch control circuit will ensure that the winch cannot run when the thruster is working.

If the thruster was activated whilst the winch was actually working, then the winch would switch off immediately.

By using the control circuit side of the relay means that the currents involved are low compared to the actual current taken by the winch.

You could choose to give priority to the winch over the thruster by using a relay to disable the thruster control circuits when the winch is on.

This way it will be impossible for both to draw current at the same time, provided it is wired correctly.


Hope this helps,


best regards, Richard.
I can't wait to be back on our boat on
the Broads.


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