Breaker/transfer switch question


Old 03-14-16, 11:51 AM
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Breaker/transfer switch question

Good morning team,

Just researching transfer switches and have a quick question regarding wiring tandem breakers.

safe to assume each switch on the tandem gets wired to its own switch inside the transfer box?
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Old 03-14-16, 11:56 AM
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Please give more details including make and model number of your switch and where the tandems are. Normally there is only one transfer switch so I'm a bit confused by why you seem to be talking about more then one. More details on what you are doing please.
Old 03-16-16, 10:45 AM
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Agree with Ray, more details are required.

But if I understand your question, you want to connect a 240v load (double breaker) to your transfer switch. A 240v load has two wires (usually red and black, but could be black and white with the white wire taped to indicate hot). Those two wires would go to a similar double breaker on the transfer switch. The breaker on the transfer switch needs to be a double breaker (not just two single breakers*) and needs to be the same amperage rating as the one that was connected.

* Depending on your transfer switch, two single breakers may be able to be used with a handle tie in certain circumstances. See Ray's question above.

Also, to clarify, a double breaker provides the load 240v. A single breaker provides 120v. And a tandem breaker is two breakers that fit in the space of one and provide 120v to two separate loads.
(There are double tandem breakers too)

Confused yet?
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