Solar Electrical Repair in Surprise, AZ

Solar Electrical Repair covers everything between the panels and the main panel of your home in Surprise: the cables under the array, the connectors that join panels together, the conduit across the roof, fuses, breakers and the utility disconnect. These parts are less expensive than an inverter, but when one fails, the whole system or a full string can stop producing. Many inverter error codes are really wiring problems.

What wears out on a Valley roof

• Cable insulation. Sun and constant heat make jackets brittle, especially where cables hang loose and rub against rails or tile.
• Connectors. Panel-to-panel connectors can loosen, corrode or melt if they were not fully seated or if mismatched brands were plugged together.
• Conduit and fittings. Expansion, contraction and monsoon gusts can crack conduit and pull fittings apart, letting water and dust in.
• Wire management. Clips fail and cables sag onto the roof, where they collect debris and get chewed by birds or rodents.
• Breakers and disconnects. Breakers that trip often, warm terminals and corroded lugs at the main panel can all cut output.

Ground faults and arc faults

A ground fault means current is leaking somewhere it should not, often through damaged insulation touching a rail or wet conduit. Inverters are designed to shut down when they detect one, which protects the house but stops production. Finding the spot means testing each string and walking the cable runs. Arc faults, often from a loose or damaged connector, can also trigger shutdowns and are a fire risk worth taking seriously. If your inverter is showing either kind of fault, leave it off and call.

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The utility disconnect

On APS-interconnected systems, the utility requires an AC disconnect. Its interconnection requirements say it must show a visible open, take a standard APS padlock, keep its front cover locked, sit next to the service entrance where it is easy to reach, and have its center 36 to 60 inches above grade with clear space in front. A disconnect that is damaged, corroded or no longer meets those rules can cause trouble at an inspection or a utility visit. We repair or replace it with an approved model when needed.

Safety first

Solar wiring is live whenever light hits the panels, even with the breaker off, so DC work needs the right procedures and tools. Grid-tied inverters are built to shut down when the grid goes out, which protects line workers, but it also means a standard system gives no backup power during an outage. If you see melted connectors, scorch marks, a burning smell or smoke near any solar component, turn the system off at the disconnect if you can do so safely and call right away.

Permits and licensing

Electrical repairs that replace equipment or change wiring usually need a permit from the city or county and an inspection. APS's rules, for customers on APS, also call for local electrical permits and inspections for interconnected systems. Arizona requires contractors to hold a license from the Registrar of Contractors, and you should see the license number on any written estimate. You can look it up on the ROC website before you hire anyone.