Panelboards equipped with a snap switch

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Rich Elec.

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408.36 (C) Snap switches rated at 30 amperes or less. Panelboards equipped with snap switches rated at 30 amperes...

Could I have an example on how a snap switch could be, or where it would be installed in a panelboard.

Thanks,
Rich
 
Many of the old fuse type lighting-only panelboards had a fuseholder right next to a snap switch for each circuit position. The fuseholder was for the overcurrent protection, and the snap switch was to turn the lights on and off. Mostly used in retail establishments. I don't know if such a panel is even made today, but if one is, it's for a pretty custom application.
 
I agree with Marc, I've seen many of these panelboards in old buildings. Nothing more than a switch in series with the plug fuse holder.
 
Typically these types of panels were installed with fuses in conjunction with switches - older type installations. I would think that someone still manufactures them, although I have not seen a new panel as such.



Here is a picture from a panel in a hospital, the panel is still active.
Phelps-Nadler12908109.jpg
 
Nice photo.:smile: This is very typical of those old panelboards. Inner trim is missing, no EGC bar so just use any available screw to terminate an EGC. Seems that this one has two such terminations.
 
Bussmann still makes fusible panelboards with snap switches. They offer these as one solution for obtaining selective coordination
 
Thanks for the help. The picture is very good. It is hard too imagine such a panelboard. I have never seen one in use. It looks like a pretty rough installation by todays standards.

Thanks again.
Rich
 
Rich Elec. said:
Thanks for the help. The picture is very good. It is hard too imagine such a panelboard. I have never seen one in use. It looks like a pretty rough installation by todays standards.

Thanks again.
Rich
Click to expand...
The one in Pierre's picture looks like it's probably an old Frank Adams panel.
 
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