lowvoltman
Member
I've heard many times that if you have more than six circuits in a panel or six switches on a rack fed from the same supply. that you must have a main breaker or fused disconnect. where is this stated in n.e.c.
overcurrent protection for panel
- Thread starter lowvoltman
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jumper
Senior Member
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- 3 Hr 2 Min from Winged Horses
are you referring to 230.71 for services? 2005 .
- Location
- Logan, Utah
Take a look at 408.36.
Chris
Chris
- Location
- Lockport, IL
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- Semi-Retired Electrical Engineer
It is not stated in the NEC. Not in those terms, anyway. There are similar sounding rules, but that one does not exist. To give one specific example, if I have a breaker in a distribution panel, and use it to power a feeder to a branch panel that is somewhere else in the same building, then the downstream panel need not have a main breaker or a fused disconnect, and it can have as many breakers as you wish.
On the other hand, if a panel is the main panel in a separate building, then either it must have a main breaker or disconnect, or it must be limited to six breakers. References 225.33(A) and 230.71(A).
On the other hand, if a panel is the main panel in a separate building, then either it must have a main breaker or disconnect, or it must be limited to six breakers. References 225.33(A) and 230.71(A).
lowvoltman
Member
I've read that in 230.71 but they try to apply that to any panel.
I understand the panel is required to have ocp but just wondering where they get this from.
I understand the panel is required to have ocp but just wondering where they get this from.
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