![]() ![]() Having an additional disconnect on the negative won't hurt anything, but it does nothing additional to actually disconnect the solar panels from the system. Also if my ground is energized then I have bigger issues to worry about.Ģ. I'm running a 12v/15A system that is intrinsically "safe" so the potential for shock if one side is still energized is zero. I went with a simple +ve disconnect using a high quality Blue Sea thermal circuit breaker for the following reasons.ġ. However I suspect the NEC code requiring dual pole disconnects are to encapsulate high voltage panal arrays. Since I'm not an electrical engineer I can't speak to the NEC code or it's applicability. If you are curious about this you can find a whole discussion and installation step by step on this YouTube Channel which Sandra often references. ![]() Has anyone used a double breaker and have recommendations on one to use? The double breakers/enclosures that I have found thus far are quite large and I don't have a lot of space left if I want to make the change. Is there a good reason not to be concerned not using a double breaker disconnect switch?ģ. Do those of us who use the single positive wire switch know that this is not up to code?Ģ. I even did an informal search of multiple RV Solar Installers and most that I saw use only a single wire cut-off switch but there are some who use a double disconnect breaker.ġ. There are many DIY installation diagrams and instructions (like those from Sandra) and even myself which show only the positive lead from the solar panels being cut off to the charge controller by a simple single wire switch. So, those of us, including myself, who have installed a cut-off switch which only disconnects the positive wire from the solar panel to the charge controller are, apparently, not follow NEC Code. " The "not solidly grounded" includes an RV as I understand it. Recently, someone pointed out to me the National Electric Code 2020 Article 690.13 Section E which states in part " The PV system disconnecting means shall simultaneously disconnect the PV system conductors that are not solidly grounded from all conductors of other wiring systems. I have benefited from many of these posts and answers to my questions when I installed my own 400W set of panels along with a Victron MPPT solar charge controller and accessories. I have seen a lot of posts on this forum showing how to install solar array panels along with a solar charge controller, etc.
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