Fiber Optic Cable - M Series Cable

M-Series Messenger Cables Product Specifications
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Light
Medium
Heavy

How to Use the Product Specifications Charts
Determine the desired fiber count, span length (pole spacing) and storm load rating for your application. Select the chart which describes your NESC Storm Load Rating (from the map below) and the desired cable style. Enter the selection chart from the left, selecting the row for the appropriate fiber count. Then go across this row until you reach the number equal to or greater than the desired span length in meters. At the bottom of this column is the "Messenger Designation: for the desired cable. Complete the part number suffix with this Messenger Designation and the selection of strength member.

Example
If the application is in Florida, the storm load map indicates that this is NESC Storm Load Rating "Light". Considering the prevalence of thunderstorms, the Dielectric Messenger is chosen from the chart below. If the requirement id for an 8-fiber cable, with the longest span length being 65 meters, enter the chart from the left (at 8 fibers), go across that row to "70", the next higher span length, and down that column to the letter "E". The part number suffix then becomes "-EDS" (Messenger Designation"E" with dielectric strength member "DS").

NESC (Medium) SS/GS Steel Messenger
Fiber Count	Span Length (meters)
2	40	60	90	125	160	200
4	40	60	90	125	160	200
6	40	60	90	125	160	200
8	40	60	90	125	160	200
12	38	55	85	115	150	190
18	38	55	85	115	150	190
24	38	55	80	110	140	180
36	30	50	75	105	135	170
48	27	45	68	95	125	160
60	25	45	68	95	125	155
72	24	40	65	89	117	150
84	-	40	61	85	110	145
96	-	38	60	80	105	140
	E	F	G	H	I	J
Messenger Designation

NESC (Medium) Dielectric Messenger
Fiber Count	Span Length (meters)
2	25	45	75	95	110	120
4	25	45	75	95	110	120
6	25	45	75	95	110	120
8	25	45	75	95	110	120
12	22	41	70	90	105	115
18	22	41	70	90	105	115
24	21	40	66	85	100	110
36	20	40	62	80	100	105
48	-	36	57	75	90	95
60	-	35	55	70	85	90
72	-	-	53	68	80	85
84	-	-	51	67	78	85
96	-	-	50	62	73	80
	E	F	G	H	I	J
Messenger Designation

Strength Member Size Messenger Part Number Designation
Strength Member Type	D	E	F	G	H	I	J	X
Stainless Steel (SS) Galvanized Steel (GS)	-	3/32 (2.4 mm)	1/8 (3.2 mm)	5/32 (4.0 mm)	3/16 (4.8 mm)	7/32 (5.6 mm)	1/4 (6.4 mm)	Customer Specify
Dielectric Strength Member (DS)	.080 (2.0 mm)	.098 (2.5 mm)	.130 (3.3 mm)	.157 (4.0 mm)	.177 (4.5 mm)	.197 (5.0 mm)	-	Customer Specify

NESC (Heavy) SS/GS Steel Messenger
Fiber Count	Span Length (meters)
2	20	35	50	70	95	120
4	20	35	50	70	95	120
6	20	35	50	70	95	120
8	20	35	50	70	95	120
12	18	35	46	70	95	120
18	18	35	46	70	95	120
24	17	35	46	65	85	110
36	17	30	42	65	80	105
48	15	28	40	57	76	95
60	15	28	40	57	76	95
72	14	24	38	55	70	90
84	-	24	38	53	68	89
96	-	23	35	50	66	85
	E	F	G	H	I	J
Messenger Designation

NESC (Heavy) Dielectric Messenger
Fiber Count	Span Length (meters)
2	15	27	42	55	65	70
4	15	27	42	55	65	70
6	15	27	42	55	65	70
8	15	27	42	55	65	70
12	13	25	40	53	62	65
18	13	25	40	53	62	65
24	12	24	40	52	60	62
36	11	24	36	47	54	60
48	-	23	33	45	52	55
60	-	23	33	45	52	55
72	-	-	30	40	50	52
84	-	-	30	40	50	52
96	-	-	30	38	45	48
	E	F	G	H	I	J
Messenger Designation