FINALLY Got This Done! DIY PV Junction Box for My Solar Setup

After months of planning, I finally finished building and wiring my custom DIY PV junction box! This isn’t your typical solar combiner box—I'm not combining strings but instead creating a clean, organized, and safe way to bring multiple PV lines into the house.

In this video, I’ll walk you through my layout process, the components I chose, and the step-by-step wiring. Whether you're building your own solar system or just curious how to manage outdoor PV cable entry with built-in safety features, this should give you some great ideas.

💰 Bonus: I’ll also compare the cost of this DIY junction box build to the pre-built combiner box I installed last year, so you can see how much you might save (or spend) depending on your route.

🔧 What’s included in the build:
- Waterproof enclosure
- Surge protection
- Inline disconnects
- Grounding points
- Future-proofing for expansion

🛠️ Parts & Components (Affiliate Links)
🔹 VEVOR Electrical Enclosure, 20x20x6in, Tested to UL Standards NEMA 4 Outdoor Enclosure - https://www.vevor.com/electrical-enclosure-c_10749/vevor-electrical-steel-enclosure-box-nema-4-outdoor-enclosure-nbsp-20-x-20-x-6-ul-p_010433852983
VEVOR 5% Discount Code: VVPROMO

🔹 VEVOR Electrical Enclosure, 20x20x6in, Non-UL NEMA 4 Outdoor Enclosure - https://amzn.to/4lqsVKI

🔹 Chtaixi DC Miniature Circuit Breaker, 2 Pole 1000V 25 Amp - https://amzn.to/4ka14NL

🔹 Dinkle DIN Rail Block Kit - https://amzn.to/3ZSzjlJ

🔹 2 Pieces DIN Rail Slotted Aluminum RoHS 12" Inches - https://amzn.to/44CeuO5

🔹 UL Listed Wire Ferrule Connectors 10 Gauge - https://amzn.to/4noVidY

🔹 Surge Protection Arrester Device, 2P DC - https://amzn.to/46kp1P6

🔹 HKS Ratcheting Crimping Tool Set - https://amzn.to/46jEsai

🔹 Industrial Hydraulic Cable Lug Crimper 16 Ton 9 AWG to 600 MCM - https://amzn.to/4l0Sy4Y

🔹 VEVOR Digital Torque Screwdriver - https://s.vevor.com/bfRcyt

🔹 Watts247 4-2 PV Combiner Box - https://watts247.com/product/pv-combiner-boxes-quick-select/?wpam_id=126

🔹 BLUETTI EP800+B500: https://shrsl.com/4lxum
Discount Code: AdamEP800 - 5% Off

For more details, visit my website: https://going-off-grid.com

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⏱️ Chapters
0:00 - Intro
2:16 Working on the Component Layout
11:54 Installing the Component Plate inside the Enclosure
15:57 Starting on the Conduit Runs
21:00 Starting to Wire up the Box
24:45 New Day Progress
33:20 DIY vs Pre-Built Pricing Comparison
36:07 - Final Thoughts & Wrap-Up

🔖 Hashtags
#offgrid #solar #diy #solarproject #currentconnected #watts247 #pvjunctionbox

⚠️ Disclaimer
I'm just a DIYer like you! This is how I set things up, but it’s not professional advice. If you're unsure, consult or hire a professional to ensure you're doing things safely and correctly.