Use the tables in this section to select the correct wires. Use shielded wire to wire the control circuit terminal block. Use crimp ferrules on the wire ends to make the wiring procedure easier and more reliable. Table 1. Control Circuit Wire Gauges and Tightening Torques (Photocoupler Output/Screw Clamp Terminal Board Type) Terminal Block Terminal Screw Size Tightening Torque N∙m (lbf∙in) Bare Wire Crimp Ferrule Recomm. Gauge mm2 (AWG) Applicable Gauge mm2 (AWG) Recomm. Gauge mm2 (AWG) Applicable Gauge mm2 (AWG) TB1 S1-S8, SN, SC, SP M3 0.5 - 0.6 (4.4 - 5.3) 0.75 (18) Stranded wire 0.2 - 1.0 (24 - 16) Solid wire 0.2 - 1.5 (24 - 16) 0.5 (20) 0.25 - 0.5 (24 - 20) TB2 M1 - M4, MA, MB, MC TB3 +V, AC, -V, A1, A2, A3, FM, AM, AC, MP, RP, AC TB4 E (G), SN, HC, H1, H2, PS, AC, D+, D-, P1, C1, P2, C2 TB5 E (G) M3.5 0.5 - 1.0 (4.4 - 8.9) 0.5 - 2 (20 - 14) 1.25 (12) - - Table 2. Control Circuit Wire Gauges and Tightening Torques (Relay Output/Screw Clamp Terminal Board Type) Terminal Block Terminal Screw Size Tightening Torque N∙m (lbf∙in) Bare Wire Crimp Ferrule Recomm. Gauge mm2 (AWG) Applicable Gauge mm2 (AWG) Recomm. Gauge mm2 (AWG) Applicable Gauge mm2 (AWG) TB1 S1 - S8, SN, SC, SP M3 0.5 - 0.6 (4.4 - 5.3) 0.75 (18) Stranded wire 0.2 - 1.0 (24 - 16) Solid wire 0.2 - 1.5 (24 - 16) 0.5 (20) 0.25 - 0.5 (24 - 20) TB2 M1 - M6, MA, MB, MC TB3 +V, AC, -V, A1, A2, A3, FM, AM, AC, MP, RP, AC TB4 E (G), SN, HC, H1, H2, PS, AC, D+, D- TB5 E (G) M3.5 0.5 - 1.0 (4.4 - 8.9) 0.5 - 2 (20 - 14) 1.25 (12) - - Crimp Ferrules Attach an insulated sleeve when you use crimp ferrules. Refer to Table 3 for the recommended external dimensions and model numbers of crimp ferrules. Use the CRIMPFOX 6, a crimping tool made by PHOENIX CONTACT. Figure 1. External Dimensions of Crimp Ferrules Table 3. Crimp Ferrule Models and Sizes Wire Gauge mm2 (AWG) Model L (mm) L1 (mm) φd1 (mm) φd2 (mm) 0.25 (24) AI 0.25-8YE 12.5 8 0.8 2.0 0.34 (22) AI 0.34-8TQ 12.5 8 0.8 2.0 0.5 (20) AI 0.5-8WH, AI 0.5-8OG 14 8 1.1 2.5