The Blue Sea ACR is dual sensing. Below is a quote from the Blue Sea website:
"An ACR senses when the voltage of either of the batteries rises to a level indicating that a charge source is active (13.6V for 30s or 13.0V for 90s). The ACR′s contacts then connect and the ACR applies the charge to both batteries. If the voltage on both of the batteries subsequently drops to 12.75V for 30 seconds, the ACR will disconnect, isolating the batteries." So if the starting bank is at 14 volts and the house bank is at 12v the circuit will combine the banks. - Paul E. 1981 C&C 38 Landfall S/V Johanna Rose Carrabelle, FL http://svjohannarose.blogspot.com/ > On Apr 6, 2016, at 9:41 PM, cnc-list-requ...@cnc-list.com wrote: > > Date: Wed, 6 Apr 2016 20:25:28 -0400 > From: John Pennie <j...@svpaws.net <mailto:j...@svpaws.net>> > To: cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> > Subject: Re: Stus-List Automatic Charging Relay > Message-ID: <fea1579c-ff90-4fc0-805a-b804bdef0...@svpaws.net > <mailto:fea1579c-ff90-4fc0-805a-b804bdef0...@svpaws.net>> > Content-Type: text/plain; charset="utf-8" > > I guess the more accurate way of saying this is that the solenoid can only be > closed by one source bank; however it?s wired. > > John > >> On Apr 6, 2016, at 8:14 PM, John Pennie via CnC-List <cnc-list@cnc-list.com >> <mailto:cnc-list@cnc-list.com>> wrote: >> >> So if I understand this correctly it isn?t a 2-way street. When a charging >> source is connected to the house bank the rise in voltage will close the >> solenoid and the two bank are now joined. The voltage ?sensor? is only on >> the house bank side. So if the starting bank is at 14 volts and the house >> bank is at 12v the circuit will remain open and the banks will remain >> isolated. Do I have this right? >> >> John
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