Dedicated Equipment Space (110.26(E)) below a meter/main

[marmathsen]

Would a meter/main be considered a Switchboard, Switchgear, or Panelboard thus subject to the requirements of 110.26(E)? As a residential electrician, I struggle to parse the difference between them the three as their defined in 100.

To be clear I'm specifically talking about a 320A meter/main with (2) 200A disconnects in separate compartments. Eaton U4042MCC
https://rexel-cdn.com/products/4.pdf?i=7E75AA73-D8C5-4CB3-BDE5-6FA4EFBA7EEB

Thanks in advance

 

[infinity]

IMO yes, it meets the Article 100 definition of a panelboard.

Panelboard. A single panel or group of panel units designed for assembly in the form of a single panel, including buses and automatic overcurrent devices, and equipped with or without switches for the control of light, heat, or power circuits; designed to be placed in a cabinet or cutout box placed in or against a wall, partition, or other support; and accessible only from the front.

 

[don_resqcapt19]

IMO yes, it meets the Article 100 definition of a panelboard.

Not only does it meet the definition, they are listed to UL 67, which is the Panelboard standard.

 

[infinity]

What if it's only the meter enclosure?

 

[wwhitney]

Not relevant to the OP, but how about a meter/main with just one OCPD? Seems like it would not meet the definition of a panelboard.

Cheers, Wayne

 

[jaggedben]

What if it's only the meter enclosure?

If it's just the meter socket, I'd say it doesn't need the dedicated equipment space.

But he said 'meter/main' so that is service equipment.

Note that 'service equipment' was added in 2023. So if you're still on the 2020, then you can argue that a meter/main with main breaker only is exempt, whereas a meter/main with a panelboard distribution is not exempt. Which makes some sense, since the main-breaker-only box doesn't need as many circuits brought to it.

 

[kwired]

Not relevant to the OP, but how about a meter/main with just one OCPD? Seems like it would not meet the definition of a panelboard.

Cheers, Wayne

I think it does meet the definition. And so does a single enclosed breaker assembly. Single meter only does not meet the definition. That don't mean some POCO's won't have their own clearance rules around these though.

 

[wwhitney]

Depends on how much weight you put on the plural-ness of "automatic overcurrent devices."

Are fused disconnects and enclosed (single) breakers listed to UL 67, or is there a different listing standard?

Cheers, Wayne

 

[don_resqcapt19]

What if it's only the meter enclosure?

Then it is listed under UL 414, "Meter Sockets".

 

[don_resqcapt19]

Depends on how much weight you put on the plural-ness of "automatic overcurrent devices."

Are fused disconnects and enclosed (single) breakers listed to UL 67, or is there a different listing standard?

Cheers, Wayne

The requirements for both of those are found in UL 67.