这种联合节省了时间，这是因为点对点连接的电缆传输速度比Wye电缆快。例如图10-23所示。采用自制电缆当用户所需电缆的长度不大标准规格之内时。当电缆必须通过管道传输，而标准电缆的连接器又不能从管道中穿过时。
INPRO / SEAL 1000-A-19769-0 BEARING ISOLATOR, NIB
RENOLD, 16B1SN, ROLLER CHAIN, PITCH 1″, 10 FT, LINKS 12
NAMCO EE230-3820 90°ROTATABLE WELD FIELD IMMUNE CYLINDI
VERSA VBH-4304-S 4-WAY 1/4 NPT THREADED VALVE,
AMPHENOL CA-A411-0318-A 9806 CONNECTOR, SEALED
NIBCO T-104-0 1-1/4″ THREADED GATE VALVE, NIB
ALLEN BRADLEY 800T-H5A SERIES T 2 POSITION SELECTOR SWI
HONEYWELL DTE6-2RN MICRO SWITCH, NIB
RBC BEARINGS Y-96-L CAM FOLLOWER YOKE ROLLER W/ SEAL, N
SPIRAX SARCO 60291 SPRING KIT, PPC / PPF / PPF-P, I
DANFOSS 500125 Bi DIRECTIONAL OPTIONAL CONTROLLER
GREEN 1 3/8-12, PIPE TAP, NF, G, H-4, K6 HS, 6 FLUTE, 6
NUMATICS 153SS415M015W DIRECT SOLENOID / AIR PILOT VALV
CF SCHEER, HWB 77-168Z, FLOAT SWITCH
CF SCHEER, HWB 87-168, FLOAT SWITCH
CLEVELAND 501657 / EDP-38717 PEERLESS REAMER 7/8″, STRA
CLEVELAND 505952 / EDP-38717 PEERLESS REAMER 7/8″, STRA
SOLA 23-23-125 CONSTANT VOLTAGE TRANSFORMER HARMONIC NE
NAMCO EE280-92140 CYLINDICATOR SENSOR, NIB
