Practical Power Plant Engineering. Zark Bedalov

cabling and purposes. For instance, establish that cable C1 for all the plant motors is always the cable from the motor starter going to PLC. If that cable is not used, that number is skipped for that particular drive. Push button station always occupies cable C2, etc. This consistent method of numbering will help you computerize the cable lists and to sort the lists to specific equipment.

      The equipment numbers are needed to create load lists, which will later be expanded to create the list of schematics and cable lists. For instance by adding to the list of loads: the load names, voltage, kW rating, MCC, and bucket, a computer program can create a list of cables, select the cable sizes, and assign “From – To” destinations without any manual input.

      If you add a typical schematic diagram type for each drive or feeder to the load list, the computer program will assign and fill in the cables and cable details on the drawings for each particular drive/feeder without any human input.

1.2.7 Load List

Based on the data given in the load list (Table 1.1), the computer calculates the cable size, type, length, and routing (see Table 1.2).

      Adopt minimum cable sizes: #12 American wire gauge (AWG) for power and #16 AWG for controls.

      Should the kW rating change and a new kW rating be entered into the list, the cable size will be computer‐updated automatically when the cable list is regenerated.

      The same computer program generates and prints the schematic and wiring diagrams automatically adding to the drawing of all the specific data including the cable data, input/output (I/O) data, and wiring terminations.

1.2.8 Generated Cable List

Table 1.1 Load list (simplified).

ID	Name	Volt	kW	MCC	In service	Type
40 PU 003	Feed Pump, Water Tank 1	460	15	MCC11	1	T1
40 PU 004	Feed Pump, Water Tank 1	460	15	MCC11	SB	T1
30 AG 006	Agitator, Tank 6	460	10	MCC03	1	T1
30 CR 001	Crane, 60 Tone, Main Hall	460	100	MCC03	1	F1
10 RF 003	Crusher Roof Fan	460	1	MCC 01	1	T3

      In service: 1 = operating, SB = on standby.

      Type: this is the designation of the type of operating circuit to be implemented.

Table 1.2 Cable list (simplified).

Cable ID	Cable size	kW	Type/class	From	To	Length
40 PU 003 P	1‐3/c #10 AWG,	20	Teck 600V	MCC11	PU Motor	120
40 PU 003 C1	1‐5/c #16 AWG,		Teck 300V	MCC11	PLC 2	15
40 PU 003 C2	1‐3/c #14 AWG,		Teck 300V	MCC11	PB Stn	120
40 PU 004 P	1‐3/c #10AWG,	20	Teck 600V	MCC11	PU Motor	120
40 PU 004 C1	1‐5/c #16 AWG,		Teck 300V	MCC11	PLC 2	15
40 PU 004 C2	1‐3/c #14 AWG,		Teck 300V	MCC11	PBStn	120
40 PU 004 C3	1‐2/c #14 AWG,		Teck 300V	MCC11	TH1	130
30 AG 005 P	1‐3/c #12AWG,	15	Teck 600V	MCC05	PU Motor	85
30 AG 005 C1	1‐5/c #16 AWG,		Teck 300V	MCC05	PLC 3	20
30 AG 005 C2	1‐3/c #14 AWG,		Teck 300V	MCC05	PB Stn	85
10 SP 003 P	1‐3/c # 12 AWG,	5	Teck 600V	MCC01	PU Motor	60
10 SP 003 C2