[RE-wrenches] Class 320 meter main combos, new requirements

[William Miller]

Friends:



I have ordered a Class 320 Meter/Main/Combo.  My vendor informs me there
are new codes that apply to these cans, specifically in 230.71(B), cited
below:



*(B) Two to Six Service Disconnecting Means. *Two to six service

disconnects shall be permitted for each service permitted by

230.2 or for each set of service-entrance conductors permitted

by 230.40, Exception No. 1, 3, 4, or 5. The two to six service

disconnecting means shall he permitted to consist of a combination

of any of the following:

(1) Separate enclosures with a main service disconnecting

means in each enclosure

(2) Panelboards with a main service disconnecting means in

each panelboard enclosure

(3) Switchboard(s) where there is only one service disconnect

in each separate vertical section where there are

barriers separating each vertical section

(4) Service disconnects in switchgear or metering centers

where each disconnect is located in a separate compartment





Here is an analysis, apparently from Siemens:





Apparently there are factory partitions required now and some models have
them and some do not.  Of course the one I specified, advocated for and
that is cheaper does not have the partition.  I don’t want to order the
wrong one so I am looking for verification I am understanding this
correctly.



Have any of you run up against this when ordering these devices or having
them approved?



Thanks in advance for any input!



William Miller



Miller Solar

17395 Oak Road, Atascadero, CA 93422

805-438-5600

www.millersolar.com

CA Lic. 773985
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