stupid doorbell question

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  #1  
Old 03-10-16, 08:20 AM
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stupid doorbell question

stupid question.... is damage insulation and exposed copper a hazard with DOORBELL WIRING?
 
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Old 03-10-16, 08:25 AM
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On the low voltage side probably not. Slight possibility the transformer might do more than smoke with a direct short. It should though be fixed as soon as possible or the transformer disconnected.
 
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Old 03-10-16, 08:27 AM
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Not really a hazard per se. I suppose if it dead shorted you could burn up the transformer or the wire. You could easily repair it with shrink tube, tape or that liquid paint-on tape.
 
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Old 03-10-16, 08:39 AM
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What prompted me to ask, is one of the wires that poke thru the door trim for a switch has exposed copper right at the hole.... its very brittle and short to work with. I painted some liquid electrical tape on the tiny portion I could reach but there is still a little bare wire inside the hole in the trim.

Doorbell works, the other wire appears OK... just a little copper touching the trim.

Is that a concern at all?


And you mention dead shorts... would the doorbell be ringing continuously until the connection opened?
 
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Old 03-10-16, 08:46 AM
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If there was a dead short, the bell would not ring. The transformer would either buzz, burn out or blow a fuse if it had one.
 
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Old 03-10-16, 08:49 AM
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would you open this can of worms if you were me?
 
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Old 03-10-16, 08:55 AM
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In a word, NO .
 
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Old 03-10-16, 10:50 AM
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Actually if the two wires at the button touch it cause the chime to sound. (The button when pressed actually shorts those two wires together.) If the two wires remain touching if it is a chime the chime will usually make a continuous slight humming noise after chiming once. Sometimes the chime or transformer will burnout. If it is a real door bell it wil just ring continuously. If a buzzer it will buzz continuously.
 
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Old 03-10-16, 11:01 AM
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I wouldn't do much other than put a wrap of electrical tape around the wire and maybe a shot of silicone caulk in the hole when I mount the button.
 
  #10  
Old 03-10-16, 04:58 PM
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You can slide heat shrink tubing over the wire in to the hole. That way you can cover section of the wire you cannot reach.
You won't be able to shrink what is inside the wall, but it still is insulated.

If you get a dead short at the button wiring and you have one of those solenoid type chime bell (ding-dong sound), you will end up burning up the solenoid inside bell.
It will sound "ding" right at the moment of short (solenoid pushing pin hammer up), then you may hear a light buzzing noise from the solenoid. The door bell in no longer ring as solenoid is stuck in up position.

I have seen solenoid getting so hot, it melted plastic sleeve and fused on to the pin hammer.
It was because someone incorrectly wired door bell. Transformer power straight to the door bell.
 
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