Wimmas Posted August 3, 2023 Share Posted August 3, 2023 Not an electrician nor claim to be an electrical expert. Just a diy'er who would like some insight as I am considering mounting my inverter setup to the DB. Very small household, work from home full time, need internet, laptop, screen, maybe a light or fan in the evenings during load shedding. Equipment: 3kw 24v Must 60A/MPPT inverter https://www.solarwaysuppliers.co.za/product/must-3kw-60amp-mppt-solar-hybrid-inverter/ 2.56kw Must 24v LifePO4 https://www.solarwaysuppliers.co.za/product/must-2-56kwh-lithium-ion-battery/ Requirements: 2x socket CB's and 1x Lights CB to run on inverter/backup system connected to DB Notes: There is the neutral bar connected straight to Eskom which feeds stove, geyser and lights. (Lights run off neutral bar 1 - Eskom) I am planning to run lights on my inverter, so I guess I will have to get an electrician to trace the neutral wires to the lights and run them from neutral bar 2 running from E/L? AC box out will feed to neutral bar 2 on main DB. Will this be an issue as there are then 2x E/L running on neutral bar 2? If so, how do I mitigate this? I do not want to run all plugs and lights as essentials as the inverter is only 3kw. Concerned that I accidently switch on the dishwasher and the kettle, then damaging the inverter 32A AC CB as that is what is recommended on inverter manual 13A AC CB on output as the inverter is only 3,000w I do have 125A DC fuse disconnectors for the battery The inverter and battery will both be grounded by earth coming from Eskom Please let me know your thoughts. Am I on the right path here? Quote Link to comment Share on other sites More sharing options...
Scorp007 Posted August 3, 2023 Share Posted August 3, 2023 28 minutes ago, Wimmas said: Not an electrician nor claim to be an electrical expert. Just a diy'er who would like some insight as I am considering mounting my inverter setup to the DB. Very small household, work from home full time, need internet, laptop, screen, maybe a light or fan in the evenings during load shedding. Equipment: 3kw 24v Must 60A/MPPT inverter https://www.solarwaysuppliers.co.za/product/must-3kw-60amp-mppt-solar-hybrid-inverter/ 2.56kw Must 24v LifePO4 https://www.solarwaysuppliers.co.za/product/must-2-56kwh-lithium-ion-battery/ Requirements: 2x socket CB's and 1x Lights CB to run on inverter/backup system connected to DB Notes: There is the neutral bar connected straight to Eskom which feeds stove, geyser and lights. (Lights run off neutral bar 1 - Eskom) I am planning to run lights on my inverter, so I guess I will have to get an electrician to trace the neutral wires to the lights and run them from neutral bar 2 running from E/L? AC box out will feed to neutral bar 2 on main DB. Will this be an issue as there are then 2x E/L running on neutral bar 2? If so, how do I mitigate this? I do not want to run all plugs and lights as essentials as the inverter is only 3kw. Concerned that I accidently switch on the dishwasher and the kettle, then damaging the inverter 32A AC CB as that is what is recommended on inverter manual 13A AC CB on output as the inverter is only 3,000w I do have 125A DC fuse disconnectors for the battery The inverter and battery will both be grounded by earth coming from Eskom Please let me know your thoughts. Am I on the right path here? 32A and 13A CB can both be 16A as the closest to the inverter output. Cannot see any reason why the 32A is such a high rating. I suggest you get someone to check what should be done in the DB. Quote Link to comment Share on other sites More sharing options...
PowerUser Posted August 3, 2023 Share Posted August 3, 2023 1 hour ago, Wimmas said: Not an electrician nor claim to be an electrical expert. Just a diy'er who would like some insight as I am considering mounting my inverter setup to the DB. Very small household, work from home full time, need internet, laptop, screen, maybe a light or fan in the evenings during load shedding. Equipment: 3kw 24v Must 60A/MPPT inverter https://www.solarwaysuppliers.co.za/product/must-3kw-60amp-mppt-solar-hybrid-inverter/ 2.56kw Must 24v LifePO4 https://www.solarwaysuppliers.co.za/product/must-2-56kwh-lithium-ion-battery/ Requirements: 2x socket CB's and 1x Lights CB to run on inverter/backup system connected to DB Notes: There is the neutral bar connected straight to Eskom which feeds stove, geyser and lights. (Lights run off neutral bar 1 - Eskom) I am planning to run lights on my inverter, so I guess I will have to get an electrician to trace the neutral wires to the lights and run them from neutral bar 2 running from E/L? AC box out will feed to neutral bar 2 on main DB. Will this be an issue as there are then 2x E/L running on neutral bar 2? If so, how do I mitigate this? I do not want to run all plugs and lights as essentials as the inverter is only 3kw. Concerned that I accidently switch on the dishwasher and the kettle, then damaging the inverter 32A AC CB as that is what is recommended on inverter manual 13A AC CB on output as the inverter is only 3,000w I do have 125A DC fuse disconnectors for the battery The inverter and battery will both be grounded by earth coming from Eskom Please let me know your thoughts. Am I on the right path here? You need changeover switch to bypassing the inverter in case of a failure. Quote Link to comment Share on other sites More sharing options...
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