Hi Josh, You're spot-on with your recommendations on the electrical work. Really appreciate the links to bona-fide vendors and equipment. That Blue-Sea fuse holder is really nice!
Sadly, the stuff at the top of my current list falls into the category of impending failure. Ha! Just finished a complete pedestal rebuild and engine service. I'm keeping an eye on the electrical stuff for now, for signs of the aforementioned impending doom, until it floats to the top of the list. Also sad - the PO and I are both electrical engineers. I think there's a saying about the plumber's pipes leaking or something... When the time comes for the 12VDC power work it will be much more robust. Comments appreciated. -- Tim Rutherford '81 C&C 36' KCB #244 Chamamé tim.rutherford.m...@gmail.com 813 748 4888 cel/text On Wed, Jun 13, 2018 at 1:47 PM, Josh Muckley via CnC-List < cnc-list@cnc-list.com> wrote: > Hey Tim, > > You may have already identified these observations. If so disregard. If > not, here are a few things to add to what I'm sure is the ever growing list > of repairs which all boats and owners have. > > - The typical post style battery cables which you have appear to be > automotive grade. The insulation that is pulling back around the cast lead > terminal is allowing the un-tinned copper strands to be exposed and > corrode. You could replace them with exactly the same thing and simply add > adhesive lined heat shrink to the junction. Better would be to get proper > marine wire with tinned copper strands. Crimp on a tinned ring terminal > and then heat shrink the junction. A "proper" crimper is exorbitantly > expensive so if you plan ahead you can get the cables made by an online > store for a very good price....you'll probably still have to add the heat > shrink. I've used the company in the link below. My only complaint is > that they don't provide any means for fractional lengths less than a foot. > Other than that they have a very high quality product at a great price. > http://www.bestboatwire.com/custom-cables/custom-battery-cable-assembly > > - Having threaded stud terminals is great. You can tighten them > appropriately and the lead won't corrode away. I suggest that you move all > of the connections to the studs not the posts. > > - IIRC to be in accordance with ABYC you'll need a fuse within 7" of the > battery connection. You may have it and it is just out of frame. One > thing that messes people up is that the starter circuit technically doesn't > need a fuse. But there's really not a good reason to not have one. I > really like the blue sea block fuses for this. They make a double fuse bus > which allows you to have a high amp (100 to 200 amp) circuit - for > starting, and a lower amp (~50) circuit - for everything else. I base the > low amp off of my 60amp charger and use a 75 amp fuse. If you have an > inverter you may need to scale it up appropriately. You can also use these > blocks to fuse individual busses throughout the boat. > https://baymarinesupply.com/blue-sea-2151-dual-mrbf-fuse-block.html > > - The terminals and their crimps on the shunt connections could use an > upgrade. The crimp is really not appropriate. It appears to have been > made by a hammer crimper and specifically the dent can break individual > conductor strands. A proper crimper will compress the barrel of the > terminal circumferentially and equally. I can't justify the cost of a > proper crimper but if you need a DYI solution that is a better alternative > check the link below. It is still a hammer crimper but it creates no dent > and the anvil is slightly wedge shaped so you get more even and > circumferential crimp. You'll still want to use boat wire with tinned > copper strands and then apply adhesive lined heat shrink. > http://a.co/bwaM9nL > > - You can educate yourself on "proper terminations" here. > https://marinehowto.com/making-your-own-battery-cables/ > > I'll certainly recognize the author's highest level of quality and > standards. I also accept a certain amount of responsibility and "risk" by > not following his prescriptions exactly. At least I'm knowledgeable of my > downfalls. Most notable is my use of the anvil crimper and flared starter > lugs instead of the heavy walled power lugs. > > Maybe some of these observations will give you things to consider while > modifying your existing system. > > All the best, > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > > > > On Wed, Jun 13, 2018, 10:42 AM Tim Rutherford via CnC-List < > cnc-list@cnc-list.com> wrote: > >> Hi Brad, >> >> Here are photos from my shunt installed on the forward bulkhead as you >> mentioned as well as the general arrangement in the compartment. >> >> Question: Does your setup have three batteries and if so what are their >> sizes and locations? I would like to add a third battery and I'm not sure >> where to put it. >> >> >> 20171001_141328.jpg >> <https://drive.google.com/file/d/1eC9D3QLB2UFpeBMcohOoz3ckg8b-Jy3Q/view?usp=drive_web> >> >> 20171001_141144.jpg >> <https://drive.google.com/file/d/1nAn8ZAHPBahyjFtnBeDDVtp3yv2MoNWm/view?usp=drive_web> >> >> 20171001_141139.jpg >> <https://drive.google.com/file/d/1JgUGO6N-7cKvGyQi_JgSfvj3nvkyhb6v/view?usp=drive_web> >> >> 20171001_141613.jpg >> <https://drive.google.com/file/d/1WMTiSVBKXFuFrRFygIxfpWWSdrr7iKBs/view?usp=drive_web> >> >> >> -- >> Tim Rutherford >> '81 C&C 36' KCB #244 Chamamé >> tim.rutherford.m...@gmail.com >> 813 748 4888 cel/text >> >> On Mon, Jun 11, 2018 at 4:26 PM, Dave Godwin via CnC-List < >> cnc-list@cnc-list.com> wrote: >> >>> Slightly off-topic but battery monitor related, after sailing off >>> Croatia last summer I decided to buy one of these >>> <https://www.panbo.com/simarine-pico-good-ideas-in-battery-monitoring-more/> >>> No support in the U.S. but I’m always up for something new. I replaced my >>> Link 20 with this unit. It has a 24-hour barograph, tank monitor, ambient >>> temperature in addition to monitoring 2 battery banks. It has bluetooth so >>> I can monitor with it’s app on my iPhone. >>> >>> Looks trick if nothing else. ;-) >>> >>> And FWIW, the shunt is placed behind the distribution panel. >>> >>> Best, >>> Dave Godwin >>> 1982 C&C 37 - Ronin >>> Reedville - Chesapeake Bay >>> Ronin’s Overdue Refit <http://roninrebuild.blogspot.com/> >>> >>> On Jun 11, 2018, at 2:00 PM, Jeremy Ralph via CnC-List < >>> cnc-list@cnc-list.com> wrote: >>> >>> On my 34, a couple years ago I rewired my batteries, starter, >>> alternator, installed a Victron BMV-702s, blue sea switch and ACR, plus >>> some bars and breakers. >>> >>> I wanted a location that was near to the batteries, engine room, and >>> fuse panel. The batteries were under the quarter birth so I installed the >>> shunt, ACR, buses, breakers all on the plywood board that separated the >>> battery compartment from other storage under the quarter berth. I took >>> that board home and worked on it there, naming it my "shunt board." It >>> had things mounted on both sides of it and has worked out really well. >>> >>> No problems since installing it. I got the Bluetooth dongle for the >>> Victron and can check the battery stats from the cockpit easily. >>> Eventually, I surface mounted the Victron display just under the VHF beside >>> the fuse panel above the nav table. >>> >>> This page is very useful and I utilized its previous version (on pbase) >>> for my install: >>> >>> https://marinehowto.com/installing-a-battery-monitor/ >>> >>> Cheers, >>> Jeremy >>> '78 C&C 34, #41 >>> Vancouver Island, BC >>> >>> ---------- Forwarded message ---------- >>> From: Brad Crawford <bcrawf7...@comcast.net> >>> To: cnc-list@cnc-list.com >>> Cc: >>> Bcc: >>> Date: Sat, 9 Jun 2018 15:27:27 -0700 >>> Subject: Stus-List Battery monitor shunt location >>> I recently purchased a Victron battery monitor and am wondering where >>> others, particularly 36' owners, have mounted their battery monitor >>> shunts, if they have one? >>> >>> Many thanks, >>> >>> Brad Crawford >>> "Dora Pearl" >>> C&C 36 >>> Seattle >>> >>> _______________________________________________ >>> >>> Thanks everyone for supporting this list with your contributions. Each >>> and every one is greatly appreciated. If you want to support the list - >>> use PayPal to send contribution -- https://www.paypal.me/stumurray >>> >>> >>> >>> _______________________________________________ >>> >>> Thanks everyone for supporting this list with your contributions. Each >>> and every one is greatly appreciated. If you want to support the list - >>> use PayPal to send contribution -- https://www.paypal.me/stumurray >>> >>> >>> >> _______________________________________________ >> >> Thanks everyone for supporting this list with your contributions. Each >> and every one is greatly appreciated. If you want to support the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> >> > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > >
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
