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Questions on installing an intercom
I have an electrical/audio question. The intercom I'm installing has a
wiring diagram that shows the sleeve terminal of the phones and mic connected to the shield at the radio end. This seems pretty typical. My question: is it okay practice to use the wiring shield as one of the conductors? In other words, can I use 2-conductor shielded wire for stereo headphones (left, right, and shield for ground) or should I buy 3-conductor so the sleeve terminal has its own wire inside the shield? I ask because both the sleeve and the shield get tied to ground at the radio end anyway. Also, should I use a separate wire for the mic audio, or can all of the conductors run inside the same shielded wire using a common ground? Thanks, Craig. |
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