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DC distribution panelboard loading schedule and calculations

H

HtownEngr

New User
Location
Houston, TX
Occupation
Principal Engineer
Quick question from a new member... I can find all kinds of examples online of how to create AC panelboard schedules and calculate their loading (single-phase and 3-phase), but I cannot seem to find any examples of this for DC panelboards (specifically 125Vdc) as fed from a 125Vdc charger system where the branch feeder cb's are 2-pole. Any direction anyone can give on where to find any examples of how the schedule would be laid out and how the loading calculations are done?

Thanks in advance for any support!
 
J

jaggedben

Senior Member
Location
Northern California
Occupation
Solar and Energy Storage Installer
Well, there's no three phase DC power, so you can ignore those examples completely.

Why do you have 2 pole branch circuit breakers? Is it an ungrounded system? Is it a bipolar system? For the latter, AC split-phase examples would probably provide guidance. For the former ... I think it'd really just be simple addition.
 
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