Seal off for sewer pump station.

[Pete Moran]

I'm trying to find out if a sealoff is still required between the control box and wet well of sewer pump station if the station has less the 5 households on it.

 

[Cow]

I never understood how they differentiate. I did a lift station for a warehouse/office, and the sewer guys dropped all the materials off I was supposed to use. I noticed a lot of explosion proof fittings in the pile and asked how they determined if it was or not. They simply said, commercial is ex. proof, residential is not. I almost had to laugh, knowing there must be more to it than that.

In your case, I'd call the inspector that would be signing off on it.

 

[rlundsrud]

You need to find out what the environment that you are installing the equipment is classified as, this is something that should be determined by an engineer. While sold/designed the system? I would talk with them.

 

[kwired]

"The Mythbusters" had a hard time creating a methane explosion in a porta potty in one episode. If there is any ventilation at all - you may ignite gas but is hard to get an explosion, from their findings anyway.

 

[Cow]

"The Mythbusters" had a hard time creating a methane explosion in a porta potty in one episode. If there is any ventilation at all - you may ignite gas but is hard to get an explosion, from their findings anyway.

If the NEC relied on Mythbusters for testing/evaluation, we most likely wouldn't have AFCI's.

 

[kwired]

If the NEC relied on Mythbusters for testing/evaluation, we most likely wouldn't have AFCI's.

:thumbsup:

 

[Joe Villani]

Take a look at NFPA 820.

Based on the table it appears unclassified. But you should seal it with something to prevent gases from migrating.

Also you have to make sure your building code references NFPA 820 or it would ultimately be up to the AHJ.

 

[tom baker]

In Washington we have an exemption in our state code for household sewer pump systems.