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Solar pumping system accessories

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Q: How many cells does a typical solar panel consist of?
A: Between 36 and 72 panels
Q: What is the purpose of a surge arrestor?
A: It protects against nearby lightning strikes and thunderstorms
Q: What do zinc anodes do?
A: They help prevent corrosion in the motor
Q: When should you use a sine wave filter?
A: With an external frequency drive connecting to a motor higher than 380VAC