Split bus panel question

Came across this panel and the only main breaker (60 amp) was listed for lighting. Nothing else was listed as a main disconnect. The wiring diagram shows there should be main disconnects above the lighting disconnect. There was no other disconnect on the property. Thanks for any help with this.

Something looks fishy. The wiring diagram does not appear to match with the bus.

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Possible wording: “The electric service was configured so that too many hand movements were necessary to turn off all power for the service. Six or fewer circuit breakers should be required to turn off all power to a residence. This is a potential safety hazard during an emergency when the power needs to be turned off quickly. Recommend that a qualified electrician evaluate and repair per standard building practices, to include a single main disconnect breaker.”

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Looks like a split-bus to me there are 6-2 pole slots just like in the diagram. The 2 pole 60 amp is in the third 2 pole slot down on the left.

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Any reason you’re skipping the first row where the SECs appear to terminate?

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Yes, because you cannot install 2-2 pole circuit breakers in that row. The 6 slots begins below that first row just like on the panel label. I would guess that the conductor attachment terminals are either riveted, bolted or welded to the bus. If I were called out to evaluate this panel I would remove a few CB’s to confirm that the bus is indeed split.

How did you determine this? Are you saying if whatever they used to terminate those SE conductors was removed, 2x regular 2-pole breakers would not fit side by side in that first row? I’m not convinced.

Why would you need to do this since you’re sure the 60amp 2pole is in the 3rd row and the diagram does not reflect missing main lugs above the 3 rows I outlined in my pic :slight_smile:

Even the dead-front cover reflects the 60amp breaker to be in 4th row. Well, either the diagram is wrong/poorly drawn or the bus does not match.

So, if this is a split bus like the diagram shows than the whole home is being ran off of 1 60 AMP breaker? If for some reason its not a split bus than there are two many throws to shut the power off? Either way would you agree there is a problem? Thanks again

Drew, do you happen to have a pic of the bottom of the panel showing where the conductors from the 60amp breaker go?

No, unfortunately I do not.

It’s a split bus panel, the left 60 amp 2-pole breaker is feeding the bottom section and is in the third 2-pole slot down on the left. This is clearly shown on the label inside of the panel. The (6) 2-pole slots for the up to (6) service disconnecting means begins BELOW the terminals for the SEC’s. If you could remove the terminals and install two more CB’s that would be 8 slots without a main and no split bus panel was built that way

So would that basically limit the whole house to 60amps ? I know there can be up to 6 disconnects but because there is only 1 60 amp would this be an underpowered issue?

2nd half of panel is limited to 60 amps

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It looks like it’s a 200 amp service

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Only three hand actions are needed in the OP. It is possible to do it in 2.

Please read Rob’s explanation of spaces 1 -6.

You have a Siemens CB in that Bryant panel. :cowboy_hat_face:

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The circuits below the 2-pole 60 amp CB are all fed from the 2-pole 60 amp CB therefore as Michael stated that section of the panel is limited to 60 amps. The panel is not limited to 60 amps because you can install CB’s above the bottom split-bus section.


Ok thank you very much

Ok, thank you

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Thanks Marc, I am calling that out as well as the open knockout

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