Ronk as service disconnect

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Senior Member
Location
USA
Occupation
Electrician
Hey guys. So I'll be building a new service for a customer that will consist of coming from a pad xfmr to a rack that will have a 200A grade level Ronk feeding 1 200A panel, and a separate 200A panel besides that. So 2 200A services feed from the tub, only 1 will have the Ronk for a generator, metering will be done by the POCO via CT's.

Question is, does my Ronk have to be SE rated? Meaning that it has ON - OFF - AUX on the handle. or can it be just ON -AUX style? In theory I would label my 200A panels as Emergency Disconnects and I would plan on the Ronk not really being the main disconnect. But if I have to get the SE Ronk I can, just more money is all.
 
Rural areas we ignored the Ronk transfer switches. They were a convenience disconnect and the SED didn't 'see' them.
A good share of them were utility provided.

Ask your AHJ or spend the $$.
Is good they are rather consistent statewide. Same ways of enforcement over here.

By "not seeing" that equipment on the pole that is utility provided you treat outgoing conductors as though they are service conductors even if there is an overcurrent device on their equipment. Never know when some upgrade of that equipment on the pole will occur, or if customer decides they want a unit with manual transfer switch (poco can put those on cheaper than I can provide a MTS for) and you end up without an overcurrent device on the pole or sometimes you go from no overcurrent device to having one. Simplest approach for SED is to just consider anything leaving POCO provided equipment to be service conductors.

The MTS units the POCO puts on are not listed, something us contractors aren't supposed to be able to get away with either.
 
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