Swapping breakers

[Alwayslearningelec]

Of the main is staying would you remove and reinstall these (2) 800A and (1) 400A breaker while gear is live or is that way too dangerous? It's 120/208v so thinking that does make a difference as 277/480 would def be a no no Thanks

 

[don_resqcapt19]

I don't see that as justified energized work, so in my opinion the main must be off.

 

[Jraef]

And the voltage level doesn’t matter…

 

[jim dungar]

If that is an FPE panel those branch breakers are bolted in. Dealing with nuts and washers goes a lot faster when you aren't worried about dropping them into live bussing.

 

[acrwc10]

If it was a SqD I-Line maybe, but no way on a bolt in FPE. Plus the Arc hazard and PPE would be a pain compared to simply notifying the tenants and doing it during "non-work" hours.

 

[Alwayslearningelec]

If it was a SqD I-Line maybe, but no way on a bolt in FPE. Plus the Arc hazard and PPE would be a pain compared to simply notifying the tenants and doing it during "non-work" hours.

What is FPE? How would SQD line differ? Thanks

 

[augie47]

I-Line breakers are basically "plug-in" as opposed to FPE bolt-in (bolted to buss) so I-Line would be safer top exchange but OSHA rules apply to both.

 

[Alwayslearningelec]

I-Line breakers are basically "plug-in" as opposed to FPE bolt-in (bolted to buss) so I-Line would be safer top exchange but OSHA rules apply to both.

Got it thank you.