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TABLE III

RECOMMENDED INSTRUMENT-TRANSFORMER CABINET SIZES

Conductors Number of

Installation Type	Installation Voltage	Max # per Phase	Service Size (KCM)	Transformer Cabinet Size Inches	Hinged Doors Required
1-Phase	120/240	1 2 2 3	750 or Less 500 or Less 600 to 750 500 or Less	24 x 24 x 10 24 x 32 x 10 24 x 42 x 12* 24 x 42 x 12*	1 1 2 2
3-Phase 3-Wire	230	1 2 2 3 3 4	750 or Less 500 or Less 600 to 750 500 or Less 600 to 750 750 or Less	24 x 32 x 10 24 x 32 x 10 24 x 42 x 12* 24 x 42 x 12* 38 x 60 x 18*** 38 x 60 x 18	1 1 2 2 2 2
3-Phase 4-Wire	120/208	1 1 2 3 3 4	500 or Less 600 to 750 750 or Less 500 or Less 600 to 750 750 or Less	24 x 32 x 10 24 x 42 x 12* 24 x 42 x 12* 24 x 42 x 12* 38 x 60 x 18*** 38 x 60 x 18	1 1 2 2 2 2
3-Phase 3-Wire	460	1 1 2 3 4	350 or Less 400 to 750 750 or Less 750 or Less 750 or Less	24 x 32 x 10 24 x 42 x 12* 24 x 42 x 12* 38 x 60 x 18*** 38 x 60 x 18	1 2 2 2 2
3-Phase 4-Wire	277/480	1 2 2 3 4	750 or Less 500 or Less 600 to 750 750 or Less 750 or Less	24 x 42 x 12* 24 x 42 x 12* 38 x 60 x 18 38 x 60 x 18 38 x 60 x 18	2 2 2 2 2
3-Phase 3-Wire or 4-Wire	2400 or 2400/4160	1 1	500 or Less 500 or Less	36 x 60 x 36 36 x 60 x 36	2 2

The sizes listed are minimums. There may be cases where a larger cabinet is necessary based on factors listed in Section 8.7.1.
*If a 24 x 42 x 12 cabinet is not available, one 36 x 36 x 10 may be substituted.
**For floor or ground level cabinets, 1 hinged door is preferred.
*** If a 38 x 42 x 12 cabinet is not available, a 48 x 48 x 18 may be substituted.
Instrument cabinets shall be furnished and installed by the Customer.