SC Burglar Alarm Practice Questions - South Carolina Burglar Alarm Contractor Examination Exam

When shielded alarm cable is used, the drain wire should generally be grounded how?

At both ends and at every device, to form multiple earth paths Not at all, because shields must float on Class 2 circuits To the siren-positive terminal At one end only (usually the panel), as a single-point shield ground

Correct Answer:

At one end only (usually the panel), as a single-point shield ground

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