Help with SPD recommendation. (Other suggestions or tips welcome too!)

DIY
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Warning - new forum member!

I’m in process of installing a 12V solar, LiFePO4 system to power a new 12V AC/Heat pump and allow charging of e-Bikes while boondocking across the US in my Lance Truck camper that sits on a Ford F250. I designed the electrical system using AI, which has made numerous mistakes in the process and I am a total newbie, so I sometimes don’t know a mistake when I see one. (I’ve uploaded the AI documents to provide more details if needed.)

02-Lance915_Master_Cable Schedule.pdf (286.7 KB)

I’ve got (6) 100W Callsun PV panels in (2) 300W strings, each connected to Midnite solar breakers that feed into separate SmartSolar 150/35. Other Victron devices in my install include a Cerbo GX MK2 with a touch 50, a Smart Shunt 500A, and a MultiPlus 12/2000/80. While reading a post on this forum I read about lightning protection which I hadn’t previously considered, and I’m curious what other boon-docking folks are using to protect their Victron equipment against surges.

And if any experts would be kind enough to point out any concerns or recommendations, I would greatly appreciate it :grinning_face:

09-09-26 Lance915_Master_Diagram_Printable.pdf (218.1 KB)

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Personally I would have a Midnite spd on each pv input (spd 115 or spd 300 dc depending on your array voltages), and then another on the ac input 300-AC (to protect against surges while connected to grid).

Just be careful theres fake SPDs out usually has a yellow wire, make sure to buy from a legit Midnite dealer.

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Thanks Brucey,

That’s what I was considering, but I don’t have much space for two of those at my breaker box or the cabinet that it’s mounted in. I could install them in the roof box where all my cabling enters the cabinet, but that would make the path to ground quite a bit longer.

And wouldn’t the 12V Air Conditioning unit require the same type of protection with their 15’ long 5AWG cables?