Actually now that you brought it up most (sub) …yeah yeah remote distribution (takes longer to type) panels are not labeled properly and in a emergency I would prefer to see a main breaker at living unit installations ,required or not.
All these years and I still do not fully comprehend the five throw rule.
Means 5 breakers or 5 swipes?
Five swipes would vary according to the size of your hand.(see can not even recall it is 6 ) 5 fingers makes it relate that way.
NEC 230.71 Maximum Number of Disconnects.
(A) General. The service disconnecting means for each service permitted by 230.2, or for each set of service-entrance conductors permitted by 230.40, Exception Nos. 1, 3, 4, or 5, shall consist of not more than six switches or sets of circuit breakers, or a combination of not more than six switches and sets of circuit breakers, mounted in a single enclosure, in a group of separate enclosures, or in or on a switchboard. There shall be not more than six sets of disconnects per service grouped in any one location. For the purpose of this section, disconnecting means used solely for power monitoring equipment, surge protective devices, or the control circuit of the ground-fault protection system or power-operable service disconnecting means, installed as part of the listed equipment, shall not be considered a service disconnecting means.
OK so if there are 30 breakers at a sub and the main panel near the service entry has 6 breakers all is good, if I once and for all understand this correctly once and for all here.
To restate : A main breaker is not required at the main panel or the sub.
The sub has zero requirements and no 6 throw rule applies.
The main panel also is not required to have a main breaker but the six throw rule does apply.
The confusion sets in because of the term throw rather than breaker.
Sure a double is technically a set or pair but we think of a double as one on the practice side of things.
Sorry to digress but we do say things such as “you have two double breakers” rather than “oh you have 4 breakers with two sets of tie bars”
Bob, there are several issues above. As Jeff stated the panel does not require a disconnect. It is the building that requires the disconnect. This is commonly supplied at the panel or a standalone disconnect.
A remote panel in an attached structure does not require a disconnect means. If in a detached structure it would need to fall under the 6 throws or less or it needs a main.
OK ,assuming you are correct I now have it exactly correct which actually is what I always thought.
Sorry to bust nuts but the subject can be confusing due to the mis information in many posts I have seen and from others .
Jeff, I disagree with some of your answers to Bob E. Without additional qualifications your answers could be correct or incorrect.
Also the issue of the disconnect being in many panels is the disconnect means for the building. Your answer makes it seem like there may not be a means of disconnect. It all depends on the terminology.