Originally Posted By: Greg Fretwell This post was automatically imported from our archived forum.
It is a 40 space panel, 6 2 pole breakers and 7 piggy back breakers. I count that as 41 “throws” and 47 overcurent devices
I didn’t even think you could get than many piggybacks in a 40 space panel.
I wonder if he ground the “hooks” off?
In a square D they have to fit on the rail in a space with a slot cut in the rail.
408.15 Number of Overcurrent Devices on One Panelboard.
Not more than 42 overcurrent devices (other than those provided for in the mains) of a lighting and appliance branch-circuit panelboard shall be installed in any one cabinet or cutout box.
A lighting and appliance branch-circuit panelboard shall be provided with physical means to prevent the installation of more overcurrent devices than that number for which the panelboard was designed, rated, and approved.
For the purposes of this article, a 2-pole circuit breaker shall be considered two overcurrent devices; a 3-pole circuit breaker shall be considered three overcurrent devices.