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Whole-Home Surge Protection · Arizona
A whole-home surge protective device (SPD) mounts at the panel and limits voltage spikes before they reach your circuits. The current National Electrical Code requires one for new and replaced services in dwellings; it works best paired with plug-in protectors for electronics.
Summer heat puts air conditioners under heavy, constant load, and monsoon storms bring lightning and outages.
Across the Southwest, homes deal with extreme summer heat and monsoon storms. Permit offices, utilities and housing stock differ by city, which affects how whole-home surge protection is planned and scheduled. These local guides cover the Arizona cities where we have written specific notes.
The monsoon season from June through September brings lightning, dust storms and high winds to Phoenix, and surges regularly damage AC control boards, pool pump controllers and electronics. Air conditioners are especially exposed because they run constantly during the hottest months.
Utility: APS or SRP, depending on address
Tucson's monsoon season brings frequent lightning, and dry desert air makes surge and static damage to electronics more noticeable. Surges commonly damage AC and heat-pump control boards, pool equipment, solar inverters and electronics.
Utility: Tucson Electric Power (TEP)
Monsoon storms from June through September bring frequent lightning to Mesa, and surges regularly damage AC control boards, pool equipment and electronics. A whole-home surge protective device at the panel, combined with plug-in protectors, is the standard approach.
Utility: SRP or City of Mesa Electric, depending on address
1. Check grounding
Grounding electrode and bonding are inspected.
2. Install the SPD
The device is mounted on a breaker or lugs with short leads.
3. Verify
Indicator lights and connections are checked.
Electricians set their own prices; local permit fees and utility requirements add to these factors.
Permits come from the city or county where the home is. For example: Phoenix: The City of Phoenix issues electrical permits through its Planning and Development Department; Scottsdale, Mesa, Tempe and other cities run their own. Tucson: Inside city limits, electrical permits come from the City of Tucson's Planning and Development Services; unincorporated areas are permitted by Pima County. Mesa: Electrical permits inside city limits come from the City of Mesa's development services.
Phoenix: APS or SRP, depending on address. Tucson: Tucson Electric Power (TEP). Mesa: SRP or City of Mesa Electric, depending on address.
No. It handles large surges at the panel; point-of-use protectors handle smaller ones near sensitive electronics.
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