[RE-wrenches] 30 amp disconnect/40 amp breaker

[Greg]

All, thanks for the responses.  I greatly appreciate it.  Yes the 30 amp 
disco is non-fusible and rated for full load.  True, you have to check 
the manu's specs.  You _always_ should check the manufacturers specs.
Anyway, 705.22(4) indicates the disco:
/Have ratings sufficient for the maximum circuit current, //
//available short-circuit current, and voltage that is available //
//at the terminals/.
That rules out a 30 amp disco in this case.

Best,
Greg Egan
Remote Power Inc.

On 8/21/2019 3:20 PM, Greg wrote:
> All, the engineer came back with 705.22(4) to back up his request.  I 
> think that's the end of it.  Per code he is right but since the 
> inverter is only capable of 25 amps, the only time the 30 amp disco 
> would see more than 30 amps is if the inverter was shorted.  If that's 
> the case opening the 30 amp disco at that time could cause failure.  
> Pretty unlikely event.
> Although I think installing a 60 on this circuit is an overabundance 
> of caution but I'll be installing a 60 amp disco on this one.
>
> Best,
> Greg Egan
> Remote Power Inc.
>

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