Indoor/Rainproof EZM General Information

NEMA 3R Construction

• 240 Vac Maximum, for use on AC systems, suitable for use as Service Equipment.

• Utility Company Requirements: Review local utility requirements to ensure that metering equipment meets their standards.

• EZ Meter-Pak meter center enclosures meet NEC wire bending requirements, and are designed for wall mounting only (not suitable for floor mounting). All unmetered conductor compartments may be sealed by the utility company.

• EZ Meter-Pak meter centers have UL Listed short circuit current ratings up to 100 kA at 240 Vac when properly applied. For three-tier series ratings refer to Data Bulletin 4100DB0301.

• Suitable incoming services for an EZM main device and available outgoing feeder(s) to downstream panelboards from EZM branch section(s:

  • Incoming Service to Main Device 120/240 Vac, 1Ø3W

    Available outgoing feeder(s) to downstream panelboards: 120/240 Vac, 1Ø3W (4-jaw ring type meter sockets, two-pole circuit breakers), (5-jaw ringless meter sockets, two-pole circuit breakers).

  • Incoming Service to Main Device 240/120 Vac, 3Ø4W Delta

    Available outgoing feeder(s) to downstream panelboards:

    • 120/240 Vac, 1Ø3W (Fed from transformer’s “A-Phase” and “C-Phase” only), (4-jaw ring type meter sockets, two-pole circuit breakers), (5-jaw ringless meter sockets, two-pole circuit breakers).

      note

      Connection to High-Leg “B-Phase” not permitted for this service.

      Standard 3Ø IN/1Ø OUT branch units are not suitable for use on this Delta System. Special branch units are available for this System by adding suffix: “CA” to catalog number (Typical Examples: EZM313125XCA, EZM313125CUXCA, EZM314225CA, EZM314225XCA, EZM314225CUXCA, EZM315225CA, EZM314225CUCA, etc.).

    • 240/120 Vac, 3Ø4W Delta (7-jaw meter sockets, three-pole circuit breakers).

  • Incoming Service to Main Device 208Y/120 Vac, 3Ø4W

    Available outgoing feeder(s) to downstream panelboards:

    • 120/208 Vac, 1Ø3W (5-jaw meter sockets, two-pole circuit breakers)

    • 208Y/120 Vac, 3Ø4W (7-jaw meter sockets, three-pole circuit breakers).

• Main Devices

  • 400, 600 and 800 A main disconnects may be end-mounted with branch units having 800 A or 1200 A continuous horizontal cross bus.

  • 1000 and 1200 A main disconnect or terminal box must be center mounted when used with branch devices with main bus rated 800 A continuous.

  • 1600 A main disconnect or terminal box must be center mounted.

  • 2000 A main disconnect must be center mounted and requires use of branch units having 1200 A continuous horizontal cross bus.

  • 400, 800 and 1200 A Type EZM-TBU terminal boxes supplied with lug landings to meet EUSERC requirements.

• Main Circuit Breaker ratings: 400, 600, 800, 1000, 1200, 1600 and 2000 A

• Main Fusible Switch ratings: 400, 600, 800, and 1200 A (1Ø3W only)

• Main Lugs Terminal Box ratings: 225, 400, 600, 800, 1200, 1600, and 2000 A

For Load Center Three-Tiered Series Ratings used downstream from Metering Equipment, refer to Data Bulletins: 4100DB0301 and 2700DB9901.

This table is for interpreting existing part numbers only. All possible combinations are not available.