Hello to all- I will be installing a 100 amp service disconnect switch for a residence. I will be separating the grounds and neutrals in the old main panel. My question is: I plan on removing the bonding jumper and using that bar for the neutrals. Can I drill and tap the panel to install another ground bar using machine screws? Thanks to all who reply.
Ground bar installation question
- Thread starter RESI
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chris kennedy
Senior Member
- Location
- Miami Fla.
- Occupation
- 60 yr old tool twisting electrician
Meets the requirements of 250.8 IMO.
Edward- Thanks for the reply. Yes, I will be removing the bonding jumper as well as installing SER cable between the switch and the panel. Meter base to disconnect switch will be SEU cable. All grounding will take place in the disconnect switch. Anything else I need to be concerned with?
ptonsparky
Tom
- Occupation
- EC - retired
We update the range & dryer to 4 wire on this type of change.
shepelec
Senior Member
- Location
- Palmer, MA
We do the same here as well..After all you are creating a sub-panel. This is a common argument on generator installs when the transfer switch is service rated with an OCPD.
kwired
Electron manager
- Location
- NE Nebraska
You may need to scrape paint behind that ground bar to ensure bonding of the enclosure, if panel thickness is not enough you may need other methods of bonding the panel (I believe you need at least two threads engaged in the mounting screws) maybe a nut on the screw satisfies this if panel is not thick enough.
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