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Old 3 phase panel question?

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Brettw

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I have an old 3 phase panel that is not in use anymore. It has some 3 pole breakers, my question is can I use the 3 pole breakers for my input breaker coming from my lvx 6048, but only use 2 poles to power up the panel. This would be my sub panel.
60 amp 3 pole breaker if that matters.
 
Yes you can but every third breaker space will not be powered. Building inspector may not like it but along as every circuit is breakered it is safe to do that.

If the existing main breaker is too large to be suitable for the inverter output it is permissible on most panels to back feed a breaker in the load area of the panel with a breaker of suitable size for the inverter in question.

Please state the manufacturers of your three phase panel, I am familiar with many American brands and some germany units.
 
Last edited:
Tecnodave said:
Yes you can but every third breaker space will not be powered. Building inspector may not like it but along as every circuit is breakered it is safe to do that.

If the existing main breaker is too large to be suitable for the inverter output it is permissible on most panels to back feed a breaker in the load area of the panel with a breaker of suitable size for the inverter in question.

Please state the manufacturers of your three phase panel, I am familiar with many American brands and some germany units.
Click to expand...
Cuttler hammer style breakers. Assuming that's the manufacturer.
Thanks for the reply
 
Cutler Hammer CH style breakers are getting a bit rare of late. There is no interchange to CH but Square D does make a QO breaker variant that fits a CH panel, rare though, I‘ve seen a few of them
 
Cutler Hammer was Westinghouse and is now Eaton. Should still be compatible.

Are you just looking to use the breaker or the whole panel?
 
Shimmy said:
Cutler Hammer was Westinghouse and is now Eaton. Should still be compatible.

Are you just looking to use the breaker or the whole panel?
Click to expand...
Eaton makes CH style. I'll use the 60 amp 3 pole (only using 2 poles) breaker to power up the panel (back feed) then send power to my main house panel. I will also put few 20 amp single pole in the CH panel for my garage use.
That is the current plan anyway.
 
Brettw said:
Eaton makes CH style. I'll use the 60 amp 3 pole (only using 2 poles) breaker to power up the panel (back feed) then send power to my main house panel. I will also put few 20 amp single pole in the CH panel for my garage use.
That is the current plan anyway.
Click to expand...
That won't make an inspector happy, but it should be ok functionally as long as you don't use any general purpose breakers in the panel and label it as such.
 
Shimmy said:
That won't make an inspector happy, but it should be ok functionally as long as you don't use any general purpose breakers in the panel and label it as such.
Click to expand...
Lol, I don't plan on any inspections?. I will be completely off grid, and if I do have to reconnect to the grid it will be as simple as turning one breaker off and flipping another breaker on.
I just want it to be functional and safe, thank you for the reply.
 
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