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Hello Code Friends,
Can a Type 2 surge protective device (SPD) be connected to the line side of the service disconnecting means and overcurrent protective device?
Thanks for the question. No, Type 2 surge protective devices are not permitted on the line side of the service overcurrent protective device. See the definition of Surge Protective Device (SPD) in Article 100 and Section 242.12(A) and (B). Section 242.14 provides requirements for Type 2 SPD locations.
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