Generate your solar wiring diagram — free
Enter your system components and get a professional wiring diagram in 30 seconds. Includes cable sizes, fuse ratings, and earthing notes for Nigerian installations.
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Professional SVG diagram
Clean, printable format with all cable specs
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Nigerian safety standards
60A ANL fuses, MCB breakers, SPD protection
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Shopping list included
All components you need to buy
System configuration
Battery type
Installation details
Used to calculate estimated cable run lengths in your shopping list.
Building type
Where will the inverter & batteries be installed?
⚠️ Important safety notice: All specifications in this tool follow Nigerian Electrical Safety Standards and best practices. This diagram is for reference and educational purposes. Always hire a certified solar electrician for actual installation. Improper wiring can cause electrical fires, equipment damage, or personal injury. The creator of this tool accepts no liability for misuse or incorrect installation.
Common questions
What cable sizes does this tool recommend?
We use Nigerian market standard cables based on system size: 6–16mm² DC cable (panels to controller), 4–10mm² AC cable (inverter to loads), and 16–35mm² battery link cable. These are based on voltage drop calculations for typical 30-meter runs.
Why different fuse sizes for different systems?
Fuse ratings must match the maximum fault current between the battery and inverter. Larger systems (5kVA) need 150A ANL fuses; smaller systems (1.5kVA) need 60A. Using the wrong size puts your entire system at risk of fire.
What is SPD (Surge Protection Device) and why do I need it?
SPD protects your inverter from lightning surges and PHCN grid spikes. During harmattan (dry season), Nigeria sees frequent lightning. A 40kA SPD breaker costs ₦8–15k but saves a ₦500k+ inverter from destruction. Essential for NEPA-connected systems.
Can I use this diagram to order from an electrician?
Absolutely. Print or download the diagram and share it with your electrician. We recommend getting quotes from 2 other electricians too — show them all three diagrams and ask why any specs differ. This prevents cost-cutting on safety components.
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