I would like to connect a 6 position transfer box to an existing service panel. (Emergency generator in the event of power loss) I notice that these boxes cost approx. $200. and up. Prior to purchasing this box I would like to see a schematic of what this entails. Are these instructions available anywhere? Thanks, MIKE
How to ?? Generator transfer box
- Thread starter mensev
- Start date
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jimwalker
Senior Member
- Location
- TAMPA FLORIDA
Re: How to ?? Generator transfer box
Why so many positions.
1.poco normal service
2. gen.
3.
4.
5.
6.
Why so many positions.
1.poco normal service
2. gen.
3.
4.
5.
6.
- Location
- Massachusetts
Re: How to ?? Generator transfer box
Jim this sounds like the Gentran box you can see at Home Depot.
It is not a transfer switch in the normal sense.
You run the 6 circuits through it that you want to run on generator.
Each of the 6 switches is a SPDT switch.
[ December 22, 2003, 03:40 PM: Message edited by: iwire ]
Jim this sounds like the Gentran box you can see at Home Depot.
It is not a transfer switch in the normal sense.
You run the 6 circuits through it that you want to run on generator.
Each of the 6 switches is a SPDT switch.
[ December 22, 2003, 03:40 PM: Message edited by: iwire ]
- Location
- Bremerton, Washington
Re: How to ?? Generator transfer box
Most contractors around here don't use the gentrans any more. the branch circuits are only 15A. The gentrans is good for a retrofit, but a better way to go is to set a small loadcenter, and use two interlocked breakers. Sq D and others sell the interlock kit, or you can get the complete set up from Sq or Cutler Hammer.
Eylander Electric in Everett WA sells 200 amp panels with a generator breaker and interlock, all UL listed.
Most contractors around here don't use the gentrans any more. the branch circuits are only 15A. The gentrans is good for a retrofit, but a better way to go is to set a small loadcenter, and use two interlocked breakers. Sq D and others sell the interlock kit, or you can get the complete set up from Sq or Cutler Hammer.
Eylander Electric in Everett WA sells 200 amp panels with a generator breaker and interlock, all UL listed.
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: How to ?? Generator transfer box
A word of warning on these Gentran transfer switch's They only have one #12 neutral going to it from the main panel they expect you to leave the neutrals for your circuits on the busses in the main panel and this is a violation of 300.3 (B) when using the FMC that is supplyed with the unit. You will need to use a non-metal raceway method to comply. I have installed a few of these and couldn't belive this. other brands also do this and are UL listed go figure.
A word of warning on these Gentran transfer switch's They only have one #12 neutral going to it from the main panel they expect you to leave the neutrals for your circuits on the busses in the main panel and this is a violation of 300.3 (B) when using the FMC that is supplyed with the unit. You will need to use a non-metal raceway method to comply. I have installed a few of these and couldn't belive this. other brands also do this and are UL listed go figure.
- Location
- Massachusetts
Re: How to ?? Generator transfer box
If it is UL listed that way you are not violating anything.
If it is UL listed that way you are not violating anything.
- Location
- Massachusetts
Re: How to ?? Generator transfer box
Wayne I was thinking about this more and I do not see a violation of 300.3(B).
In normal mode the it is the same as a switch leg with the feed at a light.
In Emergency mode the neutral is with the hots.
Am I missing something?
Bob
Wayne I was thinking about this more and I do not see a violation of 300.3(B).
In normal mode the it is the same as a switch leg with the feed at a light.
In Emergency mode the neutral is with the hots.
Am I missing something?
Bob
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: How to ?? Generator transfer box
Yes, You are right about that. For some reason I wasn't thinking about it being a switch leg.
Thank's Iwire
Yes, You are right about that. For some reason I wasn't thinking about it being a switch leg.
Thank's Iwire
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