Answer the following questions without referring to the material just presented.

Together, residential and commercial meter stacks are available in four different amp and phase combinations. List two of them.
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In your own words, explain why commercial meter stack enclosures have no knockouts.
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You are laying out group metering with 7 positions. What stacks should be chosen, and how should they be balanced?
Stack 1 has _______ positions and the jumper should be set to _______.
Stack 2 has _______ positions and the jumper should be set to _______.
Stack 3 has _______ positions and the jumper should be set to _______.

The main fused switch is rated at 42 KAIC in the main service module. It feeds metering stacks with 42 KAIC tenant mains. These tenant mains in turn feed 10 KAIC loadcenters with 10 KAIC branches.
The series ratings for device is ______________.

List four of the six pieces of information you must obtain from a customer before you can select products for the application.
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