T-Pain Is On A Boat: Re: [Electric Boats] Battery Isolation Switch

The reason James Lambden at Electroprop specs a two-bank switch is to
allow connecting a 48/12 DCDC converter.
The propulsion bank is connected to the common post.
The DCDC converter is connected to position 1
The main contactor and then controller hangs off position 2.

This way, you can disconnect your propulsion bank and still have your
12V house system connected.
I intend to use this setup while I'm away from the boat for running
bilge pumps, the BMS and other stuff.

The only thing I might change at this point would have been to use a DC
converter that outputs 13.7V instead of 12.4v.
That way, I could have connected it as a second battery in in my house
setup, and used an ACR to keep the regular house battery charged up.
Once fully charged, the ACR would disconnect the 12v load on the
converter and then save the propulsion bank.

Cheers,

/Jason

On 2014-07-29 09:59, Mike biankablog@verizon.net [electricboats] wrote:
> Thanks for the info on the BEP 721 batterry switch. I don't need to
> control two battery banks but, I could parallel connect the switches
> and have a 500 amp continuous rating of the switch. Way over kill for
> my system but, better to have an over rated amp capacity than
> underrated.
>
> Capt. Mike
> http://biankablog.blogspot.com
>
> On Monday, July 28, 2014 9:12 PM, "Jason Taylor jt.yahoo@jtaylor.ca
> [electricboats]" <electricboats@yahoogroups.com> wrote:
>
> Just checked.
> It's the BEP 721 battery switch I have.
>
> Cheers,
>
> /Jason
>
> On Jul 28, 2014, at 11:07, "Jason Taylor jt.yahoo@jtaylor.ca
> [electricboats]" <electricboats@yahoogroups.com> wrote:
>
>> Hmm, now I'm not sure what I have...
>> I'll check tonight and get back to you.
>> As for my pack, it's a 16-cell LiFePO4, so it is definitely way
>> beyond a
>> 32V max...
>> I charge to 58.4v and resting voltage is around 54.4V
>>
>> I'm just so used to everything being BlueSea as most of the
>> electrical
>> system on my boat is that -- fuse blocks, 12v battery selector,
>> various
>> switches.
>> After a bit of searching, I found this one from BEP that triggers
>> my
>> brain... It's probably this one:
>>
> http://www.iboats.com/Heavy-Duty-Battery-Selector-Switch-Marine-BEP-Marine-Marinco/dm/cart_id.119050900--session_id.919087710--view_id.341521
>> [1]
>>
>> Cheers,
>>
>> /Jason
>>
>> On 2014-07-28 10:18, Mike biankablog@verizon.net [electricboats]
>> wrote:
>>> Jason:
>>>
>>> Thanks for the info. But, the specs for the HD switches say the
>> max
>>> voltage is 32 volts. I'm running 48 volts. What's the voltage of
>> your
>>> EP system?
>>>
>>> Mike
>>>
>>> On Monday, July 28, 2014 10:01 AM, "Jason Taylor
>> jt.yahoo@jtaylor.ca
>>> [electricboats]" <electricboats@yahoogroups.com> wrote:
>>>
>>> You want the HD series of switches from Blue Seas.
>>> That's what came with my system from ElectroProp.
>>>
>>>
>>>
>>
> http://www.bluesea.com/products/category/Manual_Battery_Switches/HD-Series
>> [2]
>>>
>>> It can handle cables up to 4/0 and 600A and is ignition
>> protected.
>>>
>>> /Jason
>>>
>>> On 2014-07-28 09:26, Mike biankablog@verizon.net [electricboats]
>>> wrote:
>>> > I'd like to install a battery isolation switch between the
>> battery
>>> > bank and the controller. I get some sparking when I disconnect
>> the
>>> > battery cables because of the electronics of the controller,
>> solar
>>> > controller and wind turbine draw power from the battery. I
>> looked
>>> at
>>> > Blue Sea battery switches but, the specs say they only
>> accommodate
>>> > wires up to 4 AWG. I have 2 AWG cables from the battery bank to
>> the
>>> > controller box. Anyone know of an on/off battery switch that
>> can
>>> > accommodate 2 AWG wires?
>>> >
>>> > Capt. Mike
>>> > BIANKA
>>> > http://biankablog.blogspot.com [3]
>>> >
>>> >
>>> >
>>> > Links:
>>> > ------
>>> > [1]
>>> >
>>>
>>
> https://groups.yahoo.com/neo/groups/electricboats/conversations/messages/25836;_ylc=X3oDMTJxamdpcHY1BF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBG1zZ0lkAzI1ODM2BHNlYwNmdHIEc2xrA3JwbHkEc3RpbWUDMTQwNjU1NDE4MA--?act=reply&messageNum=25836
>> [4]
>>> > [2]
>>> >
>>>
>>
> https://groups.yahoo.com/neo/groups/electricboats/conversations/newtopic;_ylc=X3oDMTJlZW1tZWUxBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwNmdHIEc2xrA250cGMEc3RpbWUDMTQwNjU1NDE4MA--
>> [5]
>>> > [3]
>>> >
>>>
>>
> https://groups.yahoo.com/neo/groups/electricboats/conversations/topics/25836;_ylc=X3oDMTM2Z2Vtbzd2BF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBG1zZ0lkAzI1ODM2BHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWUDMTQwNjU1NDE4MAR0cGNJZAMyNTgzNg--
>> [6]
>>> > [4]
>>> >
>>>
>>
> https://groups.yahoo.com/neo/groups/electricboats/info;_ylc=X3oDMTJlOW5iN2RtBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwN2dGwEc2xrA3ZnaHAEc3RpbWUDMTQwNjU1NDE4MA--
>> [7]
>>> > [5]
>>> >
>>>
>>
> https://groups.yahoo.com/neo/groups/electricboats/members/all;_ylc=X3oDMTJmYjVuaDEyBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwN2dGwEc2xrA3ZtYnJzBHN0aW1lAzE0MDY1NTQxODA-
>> [8]
>>> > [6]
>>> >
>>>
>>
> https://groups.yahoo.com/neo;_ylc=X3oDMTJkbTAxYmRwBF9TAzk3NDc2NTkwBGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwNmdHIEc2xrA2dmcARzdGltZQMxNDA2NTU0MTgx
>> [9]
>>> > [7] https://info.yahoo.com/privacy/us/yahoo/groups/details.html
>> [10]
>>> > [8] https://info.yahoo.com/legal/us/yahoo/utos/terms/ [11]
>>>
>>> --
>>> Jason Taylor
>>> --
>>> S/V Fugu
>>> 1978 Beneteau First 30
>>> Electroprop PM-20
>>>
>>>
>>>
>>> Links:
>>> ------
>>> [1]
>>>
>>
> https://groups.yahoo.com/neo/groups/electricboats/conversations/messages/25840;_ylc=X3oDMTJxYmFjdGJ0BF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBG1zZ0lkAzI1ODQwBHNlYwNmdHIEc2xrA3JwbHkEc3RpbWUDMTQwNjU1NzI4MA--?act=reply&messageNum=25840
>> [12]
>>> [2]
>>>
>>
> https://groups.yahoo.com/neo/groups/electricboats/conversations/newtopic;_ylc=X3oDMTJlNTNiMHI5BF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwNmdHIEc2xrA250cGMEc3RpbWUDMTQwNjU1NzI4MA--
>> [13]
>>> [3]
>>>
>>
> https://groups.yahoo.com/neo/groups/electricboats/conversations/topics/25836;_ylc=X3oDMTM2YjBhOXJvBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBG1zZ0lkAzI1ODQwBHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWUDMTQwNjU1NzI4MAR0cGNJZAMyNTgzNg--
>> [14]
>>> [4]
>>>
>>
> https://groups.yahoo.com/neo/groups/electricboats/info;_ylc=X3oDMTJlZjAyZTJmBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwN2dGwEc2xrA3ZnaHAEc3RpbWUDMTQwNjU1NzI4MA--
>> [15]
>>> [5]
>>>
>>
> https://groups.yahoo.com/neo/groups/electricboats/members/all;_ylc=X3oDMTJmdmlwYzJlBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwN2dGwEc2xrA3ZtYnJzBHN0aW1lAzE0MDY1NTcyODA-
>> [16]
>>> [6]
>>>
>>
> https://groups.yahoo.com/neo;_ylc=X3oDMTJkYzUwYTA0BF9TAzk3NDc2NTkwBGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwNmdHIEc2xrA2dmcARzdGltZQMxNDA2NTU3Mjgw
>> [17]
>>> [7] https://info.yahoo.com/privacy/us/yahoo/groups/details.html
>> [10]
>>> [8] https://info.yahoo.com/legal/us/yahoo/utos/terms/ [11]
>>
>> --
>> Jason Taylor
>> --
>> S/V Fugu
>> 1978 Beneteau First 30
>> Electroprop PM-20
>
>
>
> Links:
> ------
> [1]
> http://www.iboats.com/Heavy-Duty-Battery-Selector-Switch-Marine-BEP-Marine-Marinco/dm/cart_id.119050900--session_id.919087710--view_id.341521
> [2]
> http://www.bluesea.com/products/category/Manual_Battery_Switches/HD-Series
> [3] http://biankablog.blogspot.com/
> [4]
> https://groups.yahoo.com/neo/groups/electricboats/conversations/messages/25836;_ylc=X3oDMTJxamdpcHY1BF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBG1zZ0lkAzI1ODM2BHNlYwNmdHIEc2xrA3JwbHkEc3RpbWUDMTQwNjU1NDE4MA--?act=reply&messageNum=25836
> [5]
> https://groups.yahoo.com/neo/groups/electricboats/conversations/newtopic;_ylc=X3oDMTJlZW1tZWUxBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwNmdHIEc2xrA250cGMEc3RpbWUDMTQwNjU1NDE4MA--
> [6]
> https://groups.yahoo.com/neo/groups/electricboats/conversations/topics/25836;_ylc=X3oDMTM2Z2Vtbzd2BF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBG1zZ0lkAzI1ODM2BHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWUDMTQwNjU1NDE4MAR0cGNJZAMyNTgzNg--
> [7]
> https://groups.yahoo.com/neo/groups/electricboats/info;_ylc=X3oDMTJlOW5iN2RtBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwN2dGwEc2xrA3ZnaHAEc3RpbWUDMTQwNjU1NDE4MA--
> [8]
> https://groups.yahoo.com/neo/groups/electricboats/members/all;_ylc=X3oDMTJmYjVuaDEyBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwN2dGwEc2xrA3ZtYnJzBHN0aW1lAzE0MDY1NTQxODA-
> [9]
> https://groups.yahoo.com/neo;_ylc=X3oDMTJkbTAxYmRwBF9TAzk3NDc2NTkwBGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwNmdHIEc2xrA2dmcARzdGltZQMxNDA2NTU0MTgx
> [10] https://info.yahoo.com/privacy/us/yahoo/groups/details.html
> [11] https://info.yahoo.com/legal/us/yahoo/utos/terms/
> [12]
> https://groups.yahoo.com/neo/groups/electricboats/conversations/messages/25840;_ylc=X3oDMTJxYmFjdGJ0BF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBG1zZ0lkAzI1ODQwBHNlYwNmdHIEc2xrA3JwbHkEc3RpbWUDMTQwNjU1NzI4MA--?act=reply&messageNum=25840
> [13]
> https://groups.yahoo.com/neo/groups/electricboats/conversations/newtopic;_ylc=X3oDMTJlNTNiMHI5BF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwNmdHIEc2xrA250cGMEc3RpbWUDMTQwNjU1NzI4MA--
> [14]
> https://groups.yahoo.com/neo/groups/electricboats/conversations/topics/25836;_ylc=X3oDMTM2YjBhOXJvBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBG1zZ0lkAzI1ODQwBHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWUDMTQwNjU1NzI4MAR0cGNJZAMyNTgzNg--
> [15]
> https://groups.yahoo.com/neo/groups/electricboats/info;_ylc=X3oDMTJlZjAyZTJmBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwN2dGwEc2xrA3ZnaHAEc3RpbWUDMTQwNjU1NzI4MA--
> [16]
> https://groups.yahoo.com/neo/groups/electricboats/members/all;_ylc=X3oDMTJmdmlwYzJlBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwN2dGwEc2xrA3ZtYnJzBHN0aW1lAzE0MDY1NTcyODA-
> [17]
> https://groups.yahoo.com/neo;_ylc=X3oDMTJkYzUwYTA0BF9TAzk3NDc2NTkwBGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwNmdHIEc2xrA2dmcARzdGltZQMxNDA2NTU3Mjgw
> [18]
> https://groups.yahoo.com/neo/groups/electricboats/conversations/messages/25844;_ylc=X3oDMTJxNmtsdTNiBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBG1zZ0lkAzI1ODQ0BHNlYwNmdHIEc2xrA3JwbHkEc3RpbWUDMTQwNjY0MjU3Mw--?act=reply&messageNum=25844
> [19]
> https://groups.yahoo.com/neo/groups/electricboats/conversations/newtopic;_ylc=X3oDMTJlaXZtaDJvBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwNmdHIEc2xrA250cGMEc3RpbWUDMTQwNjY0MjU3Mw--
> [20]
> https://groups.yahoo.com/neo/groups/electricboats/conversations/topics/25836;_ylc=X3oDMTM2MXRzb3ZyBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBG1zZ0lkAzI1ODQ0BHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWUDMTQwNjY0MjU3MwR0cGNJZAMyNTgzNg--
> [21]
> https://groups.yahoo.com/neo/groups/electricboats/info;_ylc=X3oDMTJlanEzcjZxBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwN2dGwEc2xrA3ZnaHAEc3RpbWUDMTQwNjY0MjU3Mw--
> [22]
> https://groups.yahoo.com/neo/groups/electricboats/members/all;_ylc=X3oDMTJmNXZqdW9uBF9TAzk3MzU5NzE0BGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwN2dGwEc2xrA3ZtYnJzBHN0aW1lAzE0MDY2NDI1NzM-
> [23]
> https://groups.yahoo.com/neo;_ylc=X3oDMTJkanYyc2NwBF9TAzk3NDc2NTkwBGdycElkAzUyMTQzODIEZ3Jwc3BJZAMxNzA1ODg0MDkwBHNlYwNmdHIEc2xrA2dmcARzdGltZQMxNDA2NjQyNTcz

--
Jason Taylor
--
S/V Fugu
1978 Beneteau First 30
Electroprop PM-20