Bistroboy Posted April 11, 2020 Report Share Posted April 11, 2020 So I have a pop up that I just got solar for. I plug it in a pop the quick fuse on the back of the panel in the electrical box. Any reason why this would happen?? And is my panel trash now?? It’s a 100w newpowa panel. thanks! Quote Link to comment Share on other sites More sharing options...
sushidog Posted April 12, 2020 Report Share Posted April 12, 2020 If the fuse blew there's no reason to think the panel is trash. Check the polarity of the wiring to make sure it's not wired backwards. If not check the continuity on the socket in the trailer to make sure there is not a dead short on the hot wire with a VOM. Of course you need to replace the fuse in the electrical box. I'll bet the trailer and solar panel wiring is reversed. Chip Quote Link to comment Share on other sites More sharing options...
Tom_M Posted April 12, 2020 Report Share Posted April 12, 2020 Those are not fuses but diodes. Sounds like you hooked the panel directly to your battery and got the polarity wrong. If you are lucky, you can replace the diodes. Quote Tom—————————————————2005 Born Free 24' Rear Bath Towing 1978 VW Bug convertible Minneapolis, MN Link to comment Share on other sites More sharing options...
oldjohnt Posted April 12, 2020 Report Share Posted April 12, 2020 Are you sure it was a "Fuse" on the back of the panel or a Diode ??? I agree with the other fine gents, make sure you wired the panel AT THE CORRECT POLARITY. Then investigate if it was a Fuse or Diode and replace/repair as necessary. Hopefully if it was just wired at reverse polarity you didn't damage the panel. John T Quote Link to comment Share on other sites More sharing options...
Bistroboy Posted April 12, 2020 Author Report Share Posted April 12, 2020 So after checking the connectors I reversed the polarity and that’s what caused the fuse/diode to pop. So now where do I get the fuse/diode? Quote Link to comment Share on other sites More sharing options...
oldjohnt Posted April 12, 2020 Report Share Posted April 12, 2020 (edited) Have you checked with NewPowa's website ? https://www.newpowa.com/products/newpowa-100w-12v-monocrystalline-high-efficiency-solar-panel We have an old fashion mom n pop electronics supply house in our town but since Rat Shack went out of business I can't tell you where to buy new diodes. They are NOT rocket science as far as replacements, most garden variety diodes will work, they are just an inexpensive two wire (In and Out) device (think of them as a one way current flow check valve).. All you need to know is their current, voltage and power capacity, and it don't hurt if you use one that has higher (voltage and current) ratings. For 100 Watts at 12 volts (Vmp is higher) Id say one rated for 20 amps and 100 volts would work fine, JUST BE SURE AND WIRE THEM AND THE BATTERY/PANEL POLARITY CORRECT THIS TIME. DISCLAIMER I have no NewPowa specs or data or diagrams and no idea what they actually use SO THE ABOVE MAY BE WRONG AS RAIN. Check with them to insure what diodes or fuses or anything else that they use and needs replaced (whatever it was that caused the "pop" ????) the above is ONLY a pure guess NO WARRANTY PS if a diode was of adequate rating it should be able to withstand and block reverse current flow without failing. I just don't know if a "popping" was necessarily a diode or a fuse or perhaps something else ?? Maybe someone can give you an Amazon or E Bay or an actual NewPOwa part number, maybe even a picture John T Edited April 12, 2020 by oldjohnt Quote Link to comment Share on other sites More sharing options...
Kirk W Posted April 12, 2020 Report Share Posted April 12, 2020 1 hour ago, Bistroboy said: So now where do I get the fuse/diode? First, you need to determine which one it is. As I look over their website, I don't see any technical information. Quote Good travelin !...............KirkFull-time 11+ years...... Now seasonal travelers.Kirk & Pam's Great RV Adventure Link to comment Share on other sites More sharing options...
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