Maximum Wires in Electrical Metallic Conduit Tubing
Wire types RHH, RHW, RHW-2 
Blue cells editable
Conductor Size - AWG or kcmil
Conduit Trade Size metric (inches)
16 (1/2) =
21 (3/4)=
27 (1) =
35 (1-1/4) = 
41 (1-1/2) =
53 (2) = 
63 (2-1/2) =
78(3) =
91 (3-1/2) =
103 (4) =
   
Maximum Wires in Electrical Metallic Conduit Tubing
Wire type TW  
Blue cells editable
Conductor Size - AWG or kcmil
Conduit Trade Size metric (inches)
16 (1/2) =
21 (3/4)=
27 (1) =
35 (1-1/4) = 
41 (1-1/2) =
53 (2) = 
63 (2-1/2) =
78(3) =
91 (3-1/2) =
103 (4) =
Maximum Wires in Electrical Metallic Conduit Tubing
Wire types RHH*, RHW*, RHW-2*, TW, THW, THHW, THW-2
Blue cells editable
Conductor Size - AWG or kcmil
Conduit Trade Size metric (inches)
16 (1/2) =
21 (3/4)=
27 (1) =
35 (1-1/4) = 
41 (1-1/2) =
53 (2) = 
63 (2-1/2) =
78(3) =
91 (3-1/2) =
103 (4) =
 
Maximum Wires in Electrical Metallic Conduit Tubing
Wire types THHN, THWN, THWN-2 
Blue cells editable
Conductor Size - AWG or kcmil
Conduit Trade Size metric (inches)
16 (1/2) =
21 (3/4)=
27 (1) =
35 (1-1/4) = 
41 (1-1/2) =
53 (2) = 
63 (2-1/2) =
78(3) =
91 (3-1/2) =
103 (4) =
 
Maximum Wires in Electrical Metallic Conduit Tubing
Wire types FEP, FEPB, PFA, PFAH, TFE
Blue cells editable
Conductor Size - AWG or kcmil
Conduit Trade Size metric (inches)
16 (1/2) =
21 (3/4)=
27 (1) =
35 (1-1/4) = 
41 (1-1/2) =
53 (2) = 
63 (2-1/2) =
78(3) =
91 (3-1/2) =
103 (4) =
Maximum Wires in Electrical Metallic Conduit Tubing
Wire types PFA, PFAH, TFE
Blue cells editable
Conductor Size - AWG or kcmil 1
Conduit Trade Size metric (inches)
16 (1/2) = 1
21 (3/4)= 1
27 (1) = 2
35 (1-1/4) =  4
41 (1-1/2) = 6
53 (2) =  9
63 (2-1/2) = 16
78(3) = 25
91 (3-1/2) = 33
103 (4) = 42
Maximum Wires in Electrical Metallic Conduit Tubing
Wire types PFAH, TFE PFA, PFAH, TFE, Z 
Blue cells editable
Conductor Size - AWG or kcmil
Conduit Trade Size metric (inches)
16 (1/2) =
21 (3/4)=
27 (1) =
35 (1-1/4) = 
41 (1-1/2) =
53 (2) = 
63 (2-1/2) =
78(3) =
91 (3-1/2) =
103 (4) =
Maximum Wires in Electrical Metallic Conduit Tubing
Wire types Z 
Blue cells editable
Conductor Size - AWG or kcmil
Conduit Trade Size metric (inches)
16 (1/2) =
21 (3/4)=
27 (1) =
35 (1-1/4) = 
41 (1-1/2) =
53 (2) = 
63 (2-1/2) =
78(3) =
91 (3-1/2) =
103 (4) =
Maximum Wires in Electrical Metallic Conduit Tubing
Wire types XHH, XHHW, XHHW-2, ZW 
Blue cells editable
Conductor Size - AWG or kcmil
Conduit Trade Size metric (inches)
16 (1/2) =
21 (3/4)=
27 (1) =
35 (1-1/4) = 
41 (1-1/2) =
53 (2) = 
63 (2-1/2) =
78(3) =
91 (3-1/2) =
103 (4) =
Maximum Wires in Electrical Metallic Conduit Tubing
Wire types XHH, XHHW, XHHW-2 
Blue cells editable
Conductor Size - AWG or kcmil
Conduit Trade Size metric (inches)
16 (1/2) =
21 (3/4)=
27 (1) =
35 (1-1/4) = 
41 (1-1/2) =
53 (2) = 
63 (2-1/2) =
78(3) =
91 (3-1/2) =
103 (4) =