Hendrix
Senior Member
- Location
- New England
Can you go from an unfused meter socket with SEU to an unfused auto transfer switch with SEU and out to the gen. disconnect from the transfer switch with SER ?
Thanks, very helpfull although, a bit confusing.See UL WPTZ for more information
Can you go from an unfused meter socket with SEU to an unfused auto transfer switch with SEU.
No, you must have a service rated disconnect ether before the ATS or the ATS must be SE rated ( disconnect/ OCP built in). Now comes the point of where your GEC is bonded. If it is in the meter base then you are good. If not it must be brought back to the first disconnect, bonded with the neutral and every thing down stream would have to have the N - G separated and isolated using 4 wire.Can you go from an unfused meter socket with SEU to an unfused auto transfer switch with SEU .I left out part of it :dunce: Then from the transfer switch to the main panel w/SEU and then from the transfer switch out to the gen disconnect with SER.
There is a service rated disconnect between the gen. and the transfer switch. Just no disconnect from the meter to the main. just a non fused auto transfer switch.No, you must have a service rated disconnect ether before the ATS or the ATS must be SE rated ( disconnect/ OCP built in). Now comes the point of where your GEC is bonded. If it is in the meter base then you are good. If not it must be brought back to the first disconnect, bonded with the neutral and every thing down stream would have to have the N - G separated and isolated using 4 wire.
There must be a SE rated disconnect between the meter and ATS or the ATS must be SE rated. That is what I was saying in my other post.There is a service rated disconnect between the gen. and the transfer switch. Just no disconnect from the meter to the main. just a non fused auto transfer switch.
`Can the ATS be SE rated w/o a breaker?There must be a SE rated disconnect between the meter and ATS or the ATS must be SE rated. That is what I was saying in my other post.
`Can the ATS be SE rated w/o a breaker?
Yes, it could just have disconnecting means but I think most if not all are a disconnect with OCP (breaker). But I think you would be in worse shape using a ATS with just a disconnect because of 230.91. If that disconnect doesn't contain OCP then you must provide it "immediately adjacent thereto". What are you trying to accomplish? I get the feeling there is "more to the story"`Can the ATS be SE rated w/o a breaker?
Kohler makes a 200a transfer switch with out OCP. So as I said, power comes from the meter socket to the transfer switch, and to the main panel and the generator.
So, the only thing that I should be concerned about is if the ATS is SR ?
The main panel is about 4' from the TS which is about 4' from the meter socket.
OK, if it doesn't have built in OCP/Disco then it is not an SE rated ATS. You must provide a service disconnect between the meter and the ATS. You also need to go back and look at what I said in post #6 because now all of the N-G bonding will have to be reworked.Kohler makes a 200a transfer switch with out OCP. So as I said, power comes from the meter socket to the transfer switch, and to the main panel and the generator.
So, the only thing that I should be concerned about is if the ATS is SR ?
The main panel is about 4' from the TS which is about 4' from the meter socket.
Can you please point me to a specific nec article that talks to this?OK, if it doesn't have built in OCP/Disco then it is not an SE rated ATS. You must provide a service disconnect between the meter and the ATS.
Thank you, it does. I also found 230.82 in nec.Maybe this thread will help answer your questions.
http://forums.mikeholt.com/showthread.php?t=127674
230.70Can you please point me to a specific nec article that talks to this?