need disconnect ??
- Thread starter mannyb
- Start date
- Status
- Occupation
- Licensed Electrician
Either the transfer switch has a service disconnect in front of it or it is a service rated transfer switch. Which do you have?
yes Sir. The Automatic transfer switch doesnt have a disconnect on line side. The disconnect feeds straight into the ATS from 200' away.
zbang
Senior Member
- Location
- Roughly 5346 miles from Earls Court
To be clear (or correct me)- there is no disconnect physically right next to the ATS, but it is fed from a disconnect 200' away, and that's the service disconnect. Yes?
(So the ATS does have a line-side disconnect.)
- Occupation
- Licensed Electrician
???? Huh?
What is ahead of the transfer switch, just wires or some kind of overcurrent device?
the service disconnect is located 200' away. there is no disconnect or breaker at or neat ATS on line side into switch. my question is would a disconnect be required closer to ATS or not.
- Occupation
- Licensed Electrician
If you are asking if you need a main on the building then the short answer is no. 230.70 is a place to start.
Are the conductors going to the building protected at or below their ampacity? Local rules may come into play also, for instance, in my neck of the woods a service disconnect is required to be on the outside of a building.
kwired
Electron manager
- Location
- NE Nebraska
Does this "shelter" just house the generator or is that the main structure that is being supplied?
Sounds like if the service disconnect is 200 feet away on another structure then you have a structure supplied by a feeder - which still requires a disconnecting means. See art 225 part II instead of 230 regarding the building or structure supplied by a feeder.
Sounds like if the service disconnect is 200 feet away on another structure then you have a structure supplied by a feeder - which still requires a disconnecting means. See art 225 part II instead of 230 regarding the building or structure supplied by a feeder.
- Occupation
- Licensed Electrician
Good catch.
The meter loop is on H frame located 200' away. The shelter and generator are would be considered separate structure. i appreciate everyone's help and input
especially when the add NEC code reference. Thanks
since the service disconnect has OCPD. would the disconnect at shelter require fused or non fused disconnect. Where would i find code reference where a disconnect needs to be fused or non fused.
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
And remember that the ATS itself may serve as a disconnect, just not OCPD.
- Occupation
- Licensed Electrician
Fuses are not required. 225 part II, like kwired said, is the place you want to look. Golddigger makes a good point too.
kwired
Electron manager
- Location
- NE Nebraska
Which NEC edition applies? 2014 relaxed the requirement that it be suitable for use as service equipment. See 225.36.
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