Sealing concrete

[SMB]

Does the code address sealing concrete in main distribution panels? i have an install that is full of concrete dust as the concrete where the conduits enter the base is not sealed. If so, can something like Thompson's water seal be used or does anyone have an accepted recommendation to seal the concrete?

Thanks all.

 

[Hendrix]

Does the code address sealing concrete in main distribution panels? i have an install that is full of concrete dust as the concrete where the conduits enter the base is not sealed. If so, can something like Thompson's water seal be used or does anyone have an accepted recommendation to seal the concrete?

Thanks all.

There shouldn't be any concrete inside MDP's

 

[SMB]

This is a 2000A MDP floor mounted with a concrete base. Does the code say no concrete in MDP's?

 

[e57]

I would avoid anything - flammable or with high VOC.... If this cabinet is energized... I would avoid doing anything like sealing... But a good vacuuming of the bottom should be enough, but it will not stop dust entry anyway after that... In the future you can spec' that the cabinets have a bottom pan, but it complicates install unnecessarily IMO. I don't think a little dry dust will affect it that much - but if you feel it excessive - shut the gear down and vaccum it out DRY... But as said before - dust will get in there again from air movement...