Forum Discussion
wa8yxm
Jan 08, 2019Explorer III
I think it would br better to feed
Alter to REDARC
Solar to REDARC
WFCO to Battery
REDARC to battery.
As you surmised you can shut the WFCO off if you wish.
DC transfer switches do exist.. Or you can home brew. ONly need 2 or 3 parts
The circuit
Two sources one is the "optional" one is the Default
Default============= Relay NC contact
Optional---C---Diode----Relay NO contact
Relay coil between Optional (Point c) and ground.
Relay moving contact----- Battery
NOTE diode must be big enough to pass all the current and optional source must be adjusted to overcome diode forward bias drop (about 2 volts higher)
Alter to REDARC
Solar to REDARC
WFCO to Battery
REDARC to battery.
As you surmised you can shut the WFCO off if you wish.
DC transfer switches do exist.. Or you can home brew. ONly need 2 or 3 parts
The circuit
Two sources one is the "optional" one is the Default
Default============= Relay NC contact
Optional---C---Diode----Relay NO contact
Relay coil between Optional (Point c) and ground.
Relay moving contact----- Battery
NOTE diode must be big enough to pass all the current and optional source must be adjusted to overcome diode forward bias drop (about 2 volts higher)
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