I have a totally offgrid system not connected to the grid in anyway with everything bonded together and connected to an earthed electrode. The multi+ has no AC input connected from anything so it’s G/N Bond is always in effect.. the only power feeding the batteries is the solar from the multi…it is a 24 V system and it all works fine .
As I previously posted , about 2 weeks ago I had 4+ days with no sun at all and battery’s were getting low..So and hooked up a Victron IP 22 24v/16 amp portable charger I keep in my shed ,to a typical 20 amp outlet in the shed and I ran the two DC wires from the charger output out to the offgrid system a few feet outside the shed and hooked them to the bussbars to charge the battery’s that night…when the sun came up the SCC came on and both chargers worked together to fast charge the bank…It all did great …
but I got to thinking…
the sheds power that feeds the Batt charger is on a sub panel connected to the houses main system.
..the pv system is NOT connected to the shed or house system in any way, other than the pos and neg DC wires supplementally charging the batteries when needed..the charger is unplugged totally from the sheds AC system when not charging the batts.
the pv system has its own N/G connection ( in the multi) With its own dedicated electrode….the sheds sub panel is tied to the main house system with its own N/G and electrode up at the house…
Am I doing somthing risky having the Victron charger connected to the shed/ house system on its ground system while charging the pv offgrid system that is a separate and separately grounded system …
Again I say the only connection between the two system is the two DC charging wires connected to the batteries and only when I’m charging the battery bank .There is no overlap of AC power between the two systems ever...
I have never seen this question asked …..and I don’t know…thanks,
J.
As I previously posted , about 2 weeks ago I had 4+ days with no sun at all and battery’s were getting low..So and hooked up a Victron IP 22 24v/16 amp portable charger I keep in my shed ,to a typical 20 amp outlet in the shed and I ran the two DC wires from the charger output out to the offgrid system a few feet outside the shed and hooked them to the bussbars to charge the battery’s that night…when the sun came up the SCC came on and both chargers worked together to fast charge the bank…It all did great …
but I got to thinking…
the sheds power that feeds the Batt charger is on a sub panel connected to the houses main system.
..the pv system is NOT connected to the shed or house system in any way, other than the pos and neg DC wires supplementally charging the batteries when needed..the charger is unplugged totally from the sheds AC system when not charging the batts.
the pv system has its own N/G connection ( in the multi) With its own dedicated electrode….the sheds sub panel is tied to the main house system with its own N/G and electrode up at the house…
Am I doing somthing risky having the Victron charger connected to the shed/ house system on its ground system while charging the pv offgrid system that is a separate and separately grounded system …
Again I say the only connection between the two system is the two DC charging wires connected to the batteries and only when I’m charging the battery bank .There is no overlap of AC power between the two systems ever...
I have never seen this question asked …..and I don’t know…thanks,
J.