Re: Step-up Converters
Posted by Donald Booth On 2020/9/4 23:34:42
Yup on the car being positive ground.
Fish'n Jim - I can provide specs or brand/model for the inverter and/or the same for the camera/monitor if that's what you're asking about.
Here's what I have so far. I mounted the inverter to a metal panel on the inner fender of the engine compartment (steel screws through a steel panel), so I imagine the inverter housing is grounded to the chassis. The black and red wires on the input power supply side of the inverter are connected to the appropriate battery terminals. A yellow wire on the output load side of the inverter is connected to the supply terminal of a switch. The switch is mounted to the metal dashboard - but is in a plastic housing - so probably not grounded there. I have a bus bar for connecting lights in gauges, the monitor for the backup camera, etc. The bus bar is powered by a (yellow) wire coming from the load terminal on the switch - making it the red/positive side of the bus bar (true or false?). The earth terminal on the switch is connected to a black wire coming from the other side of the bus bar - making that other side of the bus bar the black/negative side (true or false?). A black wire on the output load side of the inverter is connected directly to the black side of the bus bar. The bus bars are mounted to a wooden panel with metal screws but those screws do not come in contact with any other metal, so no grounding there. And then there's the ground from the positive terminal of the battery to the engine block.
It took me awhile to write that out, but the process gave me - and hopefully you - a clearer picture of what I have. So the big question is, does that setup give me the proper grounding to safely run 12v neg ground devices from the bus bar or are changes in the grounding called for?
PS, I connected one of the gauge lights to the bus bar for a test and flipped the switch. The gauge light went on, as did the light built into the switch. I am not taking for granted that that means the system is properly wired as I believe those little light bulbs are more forgiving than more sensitive electronic devices will be.
Looking forward to your response.
PS Below is the layout. The art skills leave a lot to be desired.
Attach file:
(436.71 KB)
Fish'n Jim - I can provide specs or brand/model for the inverter and/or the same for the camera/monitor if that's what you're asking about.
Here's what I have so far. I mounted the inverter to a metal panel on the inner fender of the engine compartment (steel screws through a steel panel), so I imagine the inverter housing is grounded to the chassis. The black and red wires on the input power supply side of the inverter are connected to the appropriate battery terminals. A yellow wire on the output load side of the inverter is connected to the supply terminal of a switch. The switch is mounted to the metal dashboard - but is in a plastic housing - so probably not grounded there. I have a bus bar for connecting lights in gauges, the monitor for the backup camera, etc. The bus bar is powered by a (yellow) wire coming from the load terminal on the switch - making it the red/positive side of the bus bar (true or false?). The earth terminal on the switch is connected to a black wire coming from the other side of the bus bar - making that other side of the bus bar the black/negative side (true or false?). A black wire on the output load side of the inverter is connected directly to the black side of the bus bar. The bus bars are mounted to a wooden panel with metal screws but those screws do not come in contact with any other metal, so no grounding there. And then there's the ground from the positive terminal of the battery to the engine block.
It took me awhile to write that out, but the process gave me - and hopefully you - a clearer picture of what I have. So the big question is, does that setup give me the proper grounding to safely run 12v neg ground devices from the bus bar or are changes in the grounding called for?
PS, I connected one of the gauge lights to the bus bar for a test and flipped the switch. The gauge light went on, as did the light built into the switch. I am not taking for granted that that means the system is properly wired as I believe those little light bulbs are more forgiving than more sensitive electronic devices will be.
Looking forward to your response.
PS Below is the layout. The art skills leave a lot to be desired.
Attach file:
(436.71 KB)
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