4 doorbells, one door--? transformer

Old 04-03-03, 11:22 AM
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4 doorbells, one door--? transformer

Read posts from others, and saw that I will need a larger than normal transformer. I want to add a door buzzer that will sound in 4 rooms. What size transformer will I need? thanks
Old 04-03-03, 04:04 PM
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That depends on the ratings onthe buzzers. Look for a watts, VA or amps rating on the buzzers. Add them up and get a transformer at least 25% larger.
Old 04-03-03, 06:40 PM
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I just bought another button as I need to add one, do you just wire it on parrallel?
Old 04-03-03, 07:14 PM
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Yes, parallel to the other switch. The new switch will still be in series with the load.
Old 04-04-03, 04:33 AM
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If you're using one button on the front door and the other paralleled at the back door, you'll be constantly looking at both every time it rings. The bell unit might already have separate connections for front & back.

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