How to Protect Electrical Service from Flood Zone

[kwired]

I disagree.

For reference, we just ran three 4 inch conduits into a basement 3' below the water table.

If you have the hole cored properly, and use a linkseal, combined with polywater fst foam, there will not be an issue.

https://www.polywater.com/product/polywater-fst-foam-duct-sealant/

http://www.cooperindustries.com/con...es/link-seal_environmentalsealforconduit.html

My guess is said basement probably also has drainage tile, sump pump, fill near the wall is something that will drain easily, etc. and to a certain extent you don't really need a perfect seal.

 

[jap]

My guess is said basement probably also has drainage tile, sump pump, fill near the wall is something that will drain easily, etc. and to a certain extent you don't really need a perfect seal.

True,

That, and, I doubt the installing contractor ever actually knows just how good a seal they've made a couple of years after leaving the project.

The best penetration into a basement below grade level is no penetration at all.


JAP>

 

[Wire-Smith]

True,

That, and, I doubt the installing contractor ever actually knows just how good a seal they've made a couple of years after leaving the project.

The best penetration into a basement below grade level is no penetration at all.


JAP>

coming up from the floor in an enlarged sump chamber seemed alright to me, you just have to get there early to make it seem practical to most people.

 

[brantmacga]

Thank you for the help.

What code section would I need to look up for maximum height for panels and disconnect when in a flood zone?

Idk the specifics of where you are, but in my area it’s typically 12” minimum above flood plane. If this puts your disconnect over 6’-7”, a platform that meets minimum working space dimensions is required.


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[kwired]

Idk the specifics of where you are, but in my area it’s typically 12” minimum above flood plane. If this puts your disconnect over 6’-7”, a platform that meets minimum working space dimensions is required.


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But OP says this is in a basement, presumably in a basement in an area where flooding may be likely. That IMO changes things, and can depend on what measures are taken to prevent the basement itself from flooding.

 

[tom baker]

There is no maximum height, just 6-7 to the center of the switch from platform,and accessible, and that can be on a second story. Keep in mind the service entrance conductors are unfused and there are limits on running them inside a building, which vary greatly by jurisdiction (or encase in concrete).