A question about 2,000 ohm resistor at end of line for Concord

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Old 09-14-14, 11:54 AM
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A question about 2,000 ohm resistor at end of line for Concord

Why does it have to be at end of line,every think you read says that. Why can't the resisters just be a single point all together (on different lines,in one place). One wiring diagram shows resistor on ground side of last contact and another diagram shows on the positive side of the last contact. Does the concord use the resistor to measure the end of the circuit like a fault meter or bridge set would for a trouble in a line. Just wondering WHY?
 
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Old 09-14-14, 01:20 PM
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Ahhh.... the poor misunderstood end of line resistor.

It's actually used to monitor the line and as an aid. If the resistor is installed at the panel and the zone is shorted just outside the panel..... you'd never now. The zone would show normal but would not respond. By putting the resistor at the last device.... any short in the wiring would be detected as a fault.

The EOL resistor just needs to be at the last device. It doesn't matter if it's in the + or - line.
 
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