Installation
The installation process, how to vet a solar company and Karachi site issues.
Solar installation · Technicians
Solar Technicians and Electricians in Karachi
A house electrician and a solar technician are not the same job. The difference shows up in DC wiring, earthing and protection.
- ✓ Electrician or solar technician
- ✓ Questions before hiring
- ✓ Why DC is different
Two trades, one roof
An electrician knows house wiring, which is alternating current at 220 V. A solar installation adds direct current from the panels, which can run at several hundred volts. That is a different hazard, and it needs different parts and habits.
Some electricians are experienced in solar. Many are not. The difference shows in how they run cables, choose breakers, join connectors and test the earth.
Ask before you hire. The questions below separate a careful worker from a hopeful one.
What each can do
A rough guide. Real people vary, so ask for proof.
| Task | House electrician | Solar technician |
|---|---|---|
| AC wiring and distribution board | Yes | Yes |
| DC string design and wiring | Often not | Yes |
| Choosing DC breakers and SPD | Often not | Yes |
| Mounting structure and anchoring | Not usually | Often with a crew |
| Inverter programming and battery setup | Rarely | Yes |
| Earth testing | Sometimes | Yes, with a tester |
| Grid application papers | No | Not a technician task, a PPIB pre-qualified vendor files it |
Ask these before you hire anyone
A good technician answers each one without hesitation.
- Will you visit the site and see the roof before you quote?
- How will you size the DC cable and the breakers?
- Will you use DC-rated breakers and a surge protector on both sides?
- How will you earth the system, and will you show me the test reading?
- What happens if the inverter fails, and who repairs it?
- Will you give me a written quote with every part named?
Comparing two technician quotes fairly
Two quotes for the same job can differ by a large amount. Before you pick the lower one, put them side by side and check what each includes.
Look at the cable size and type, the brand of the breakers and the surge protector, the material of the structure and how it is fixed, and whether earthing and testing are listed. A quote that names none of these is a guess, and a guess is cheap for a reason.
Also ask how long the work takes and who is on site. A job done in a hurry by an unsupervised crew is where mistakes happen. Ask what happens if the system fails in the first month, and get the answer in writing.
Why DC wiring is not ordinary work
A panel makes power whenever light falls on it, so the wires are live during the day and cannot be switched off at the source. A DC arc burns longer than an AC arc. A loose connector or an AC breaker used on a DC line can overheat. That is why we cover DC breakers and surge protectors on their own page.
Working with us
We install the systems we sell. We do a site visit, give an itemised quote and hand over warranty papers. Warranty repairs are done by the brand, and all other after-sales service is done by us.
If you already have a system and need work done on it, tell us what it is and we will advise. Our installation guide shows what a careful job includes.
FAQs
Questions people ask us
Short answers. For your own property, send us your electricity bill and roof details.
Ask on WhatsAppSome can, but DC wiring, earthing and protection need solar experience. Ask the questions above before you decide.
Ask for past work you can verify, a written quote with every part named, and clear answers on DC protection and earthing.
Be careful. Panels are live in daylight and DC can be dangerous. Leave wiring to trained people.
We do all after-sales service apart from warranty repairs done by the brand. Contact us with details of your system.
Tell us the brand and the fault. We will advise what we can do.
Related pages
Installation Cost
What sets solar installation cost, what a quote should include and approval costs.
Breakers & SPD
DC breakers and surge protectors: ratings, standards and the mistakes to avoid.
Solar Inverters
Inverter types, sizing, brands and what to check before you buy.
Need a careful installation?
Tell us your area in Karachi and your building type. We will arrange a visit and give you a free estimate.