Challenger panels are frequently grouped with Zinsco and Federal Pacific by insurance companies. Once they appear on an inspection report, carriers usually want them replaced before they'll renew or write a new policy. AC3 LLC handles Challenger replacements the same way we handle the others: permit, PG&E coordination, modern 200-amp panel, and final inspection — from Hercules to Berkeley, with expedited service when your coverage is on the line. Call 510-224-5795.