Question about breaker switches

[boomhower]

I am planning the install of a transfer switch for a backup generator. My hot water heater has 30A breaker. The breaker has a single switch but take up the room of a double pole. Would there be an issue of using a single space 30A breaker in the transfer switch for it? I'm far from an electrical expert so looking for some guidance on this one. The rest of it is pretty simple plug and play. I can certainly use a like switch to what is in the breaker box but if I can have an additional circuit in the transfer switch it would be nice. Thanks guys.

 

[herm0016]

a water heater is going to be 220 for sure, it will need a 2 slot breaker. You can use a single slot split breaker to replace one or more of the 15 amp slots to gain some room.

 

[boomhower]

http://www.reliancecontrols.com/ProductDetail.aspx?310CRK

That is the switch I am going with. I supports the 2 slot breaker so not a big deal, still leaves my with 8 circuits which should be more than enough anyways.

 

[natto fire]

http://www.reliancecontrols.com/ProductDetail.aspx?310CRK

That is the switch I am going with. I supports the 2 slot breaker so not a big deal, still leaves my with 8 circuits which should be more than enough anyways.

Those look like GE breakers, so you can get tandem breakers if you run in to needing more circuits. For the 240v water heater, you are going to need a two pole breaker to go "leg to leg" to get the proper voltage on your split phase system.

The tandem breakers will give you two 120v circuits on the same leg.

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[Aikouka]

The manual says...

Do not install any breaker larger than 20 amps., except in positions A and B which may be 30 amps.

Those look like GE breakers, so you can get tandem breakers if you run in to needing more circuits. For the 240v water heater, you are going to need a two pole breaker to go "leg to leg" to get the proper voltage on your split phase system.

The tandem breakers will give you two 120v circuits on the same leg.

Wouldn't this need to be supported by the unit? I know on service panels, they state the number of slots and circuits where more circuits than slots means you can use some tandem breakers. (How many depends on the difference, e.g. 20-40 is tandems on all slots.)