As part of GE's push to redesign all their meters based on the I-14, a new line of switchboard models was brought out. A brief table follows to correlate the switchboard types to their corresponding service type.

When the 25Hz I-14 was renumbered the I-15, the corresponding switchboard models were affected. The DS-11 and DS-12 were split from the DS-6 and DS-7, and the DS-13 was split from the DS-9.