SOLAR Magics FIRM

HOW TO CONNECT A PHOTOCELL WITH A CONTACTOR FOR AUTOMATIC SECURITY LIGHTS 💡🌙
Many people connect security lights direct to photocell… and after some months the photocell burns 😳
Why?
Because the photocell is not designed to carry heavy load alone.
✅ The professional way is to use a PHOTOCELL + CONTACTOR.
🔌 HOW IT WORKS:
The photocell acts like a sensor 👁️
During the day = photocell OFF
During the night = photocell ON
But instead of the photocell carrying all the current to many floodlights…
👉 it sends only a small signal to the contactor coil.
Then the contactor does the heavy switching of the lights safely.
That means:
✔ Photocell lasts longer
✔ Heavy load is protected
✔ Lights switch automatically
✔ Installation looks professional
🛠️ SIMPLE CONNECTION EXPLANATION:
✅ Phase from MCB goes to photocell LINE input
✅ Photocell LOAD output goes to A1 of contactor coil
✅ Neutral goes direct to photocell neutral and A2 of contactor coil
✅ Another phase supply enters contactor input terminals
✅ Output from contactor goes to all security lights
So…
🌞 Daytime → Photocell open → Contactor OFF → Lights OFF
🌙 Nighttime → Photocell closes → Contactor ON → Lights ON automatically
⚠️ COMMON MISTAKE ELECTRICIANS MAKE:
Connecting all floodlights direct on photocell without contactor.
This causes:
❌ Photocell overheating
❌ Frequent replacement
❌ Poor reliability
Always let the contactor carry the load 💯
🔥 A clean automatic lighting system shows the difference between a wireman and a professional electrical technician.

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The truth about solar systems nobody wants to admit…
It’s not always the installer’s fault when things go wrong!

As solar energy keeps gaining ground, I’ve come across different styles of installation. Some are perfect, some manageable, and some are outright terrible.

One major issue we can’t ignore is the presence of unqualified people dragging jobs from those who are properly trained. But let’s be honest__sometimes, the real problem comes from the clients themselves.

A client will say, “I only want to power three bulbs, two standing fans, and my laptop.” You recommend a 1kVA system with two 220Ah batteries for reliable backup. After installation, this same client will secretly add four more fans, two fridges, two Air Conditioners, three televisions, and even a welding machine. 🤣😂 Ontop 1kva? 🤣🤣😀😂

When the inverter finally blows, all the blame falls on the installer. Meanwhile, the main culprit is the client who tried to cheat the system because he thinks he’s wise.

Clients need to be honest about their actual loads. It’s just like hiding your symptoms from a doctor but still expecting the perfect prescription for an illness you never mentioned.

Do not be dismayed or rather discouraged because you invested a lot of money to your solar system but failed due to the poor advice of a quack. it's not too late. Contact us and we shall get it back on track. We do Consultancy, installation and repair of Solar systems. Contact 0728629161.

Rewiring of Kva Coelmo generator and configuration of control module. Get in touch in case you have a problem with your standby generator.We do industrial wiring, commercial wiring,domestic wiring.Get in touch. Contact 0728629161

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