DIYbanter - View Single Post - Circuit Breakers & Residential Service Box Question

Wayne Whitney

On 2008-05-30, wrote:

You can buy a tandem circuit breaker. It has two circuits in the same
1" form factor. They are available in 15A and 20A.

Yes, you can buy them, but they typically have a mechanical interlock
on them so they only fit in the spaces in the breaker box where they
are permitted by the manufacturer's design. The OP said he had a 24
space box that didn't accept any tandems.

Yours, Wayne