PRODUCT SHOWCASE

IMSA Signal & Communications Cable

Since 1896, the International Municipal Signal Association (IMSA) has been concerned with many aspects of governmental public safety communications and signaling.

The development of a series of electrical cable and wire specifications is one of the many services provided by IMSA. These specifications assure specifying engineers, purchasers and users that they are receiving quality cable and wire that will perform reliably within the application scope of each specification.

The cable constructions offer maximum resistance to moisture and weathering and are primarily designed for outside installations, including aerial, underground duct, and direct earth burial. They are also excellent options for industrial and other users when selecting control and communications cables for outside installations.

IMSA Spec 19-1 and 20-1 Signal Cable
Aerial and Duct, Unshielded, 600 Volt
Fire protective signaling, or as traffic signal cable.
IMSA 19-1 polyvinyl chloride (PVC) jacket
IMSA 20-1 polyethylene (PE) jacket

IMSA Spec 19-2 and 20-2 Signal & Communications Cable
Aerial and Duct, Twisted Pairs, Shielded, 600 Volt
IMSA 19-2 polyvinyl chloride (PVC) jacket
IMSA 20-2 polyethylene (PE) jacket

IMSA Spec 19-3 and 20-3 Figure 8 Signal Cable
Self Supporting Aerial, Unshielded, 600 Volt

IMSA 19-3 polyvinyl chloride (PVC) jacket
IMSA 20-3 polyethylene (PE) jacket
Integrated messenger of 1/4" 7-wire extra high strength (6,650 lb. test) flooded galvanized steel strand; or .134" solid extra high strength (2,800 lb. test) galvanized steel wire smaller conductor size cables.

IMSA Spec 19-4 and 20-4 Figure 8 Signal and Communications Cable
Self Supporting Aerial, Twisted Pairs, Shielded, 600 Volt
IMSA 19-4 polyvinyl chloride (PVC) jacket
IMSA 20-4 polyethylene (PE) jacket
Integrated messenger of 1/4" 7-wire extra high strength (6,650 lb. test) flooded galvanized steel strand.

IMSA Spec 19-5 and 20-5 Signal Cable
Direct Earth Burial, Shielded, 600 Volt
IMSA 19-5 polyvinyl chloride (PVC) jacket
IMSA 20-5 polyethylene (PE) jacket

IMSA Spec 19-6 and 20-6 Signal and Communications Cable
Direct Earth Burial, Twisted Pairs, Shielded, 600 Volt
IMSA 19-6 polyvinyl chloride (PVC) jacket
IMSA 20-6 polyethylene (PE) jacket

IMSA Spec 39-2 and 40-2 Communications Cable
Air Core, Aerial and Duct, Twisted Pairs, Shielded, 300 Volt
Traffic communications and data acquisition cable suitable for power limited use.
IMSA 39-2 polyvinyl chloride (PVC) jacket
IMSA 40-2 polyethylene (PE) jacket

IMSA Spec 39-4 and 40-4 Figure 8 Communications Cable
Air Core, Self Supporting Aerial, Twisted Pairs,
Shielded, 300 Volt
IMSA 39-4 polyvinyl chloride (PVC) jacket
IMSA 40-4 polyethylene (PE) jacket
Integrated messenger of 1/4" 7-wire extra high strength (6,650 lb. test) flooded galvanized steel strand.

IMSA Spec 39-6 and 40-6 Communications Cable
Air Core, Direct Earth Burial, Twisted Pairs, 
Shielded, 300 Volt
IMSA 39-6 polyvinyl chloride (PVC) jacket
IMSA 40-6 polyethylene (PE) jacket

Filled Cable
Filled cable refers to a petrolatum-polyethylene translucent gel compound applied in liquid state to twisted pair cable core assemblies and to both sides of the overall metal shielding tape(s). The entire cable assembly under the outer cable jacket is 100% filled; eliminating possible moisture migration or humidity changes due to ingress and/or outer jacket damage.

IMSA Spec 59-2 and 60-2 Filled Communications Cable
Aerial and Duct, Twisted Pairs, Shielded, 300 Volt
IMSA 59-2 polyvinyl chloride (PVC) jacket
IMSA 60-2 polyethylene (PE) jacket

IMSA Spec 59-4 and 60-4 Filled Figure 8 Communications Cable
Self Supporting Aerial, Twisted Pairs, Shielded, 300 Volt
IMSA 59-4 polyvinyl chloride (PVC) jacket
IMSA 60-4 polyethylene (PE) jacket
Integrated messenger of 1/4" 7-wire extra high strength (6,650 lb. test) flooded galvanized steel strand.

IMSA Spec 59-6 and 60-6 Filled Communications Cable
Direct Earth Burial, Twisted Pairs, Shielded, 300 Volt
IMSA 59-6 polyvinyl chloride (PVC) jacket
IMSA 60-6 polyethylene (PE) jacket

Traffic Signal Cable
IMSA Spec 50-2, Lead-In Feeder Cable
Two conductor, Shielded, Polyethylene (PE) jacket

Loop Wires
IMSA Spec 51-1, Single conductor, PVC/Nylon Jacket
IMSA Spec 51-3, Single conductor, Cross-Linked PE Jacket
IMSA Spec 51-5, Single conductor, PVC/Nylon with Tube Jacket
IMSA Spec 51-7, Single conductor, XLP with Tube Jacket of .030" thick PE or PVC tube

Non IMSA Spec Traffic Signal Lead-In Wires
These cables are variously described as magnetometer wire, Texas loop, California loop, 138 cable, and home run cable.

3 Conductor, 20 awg, Stranded, Shielded, Black PVC Jacket
4 Conductor, 18 awg, Stranded, Shielded, Black PE Jacket
2 Pair, 16 awg, Stranded, Shielded, Gray PVC Jacket

Line Wire
Single Conductor, Black Polyethylene Jacket
IMSA Spec 26-3 Hard Drawn Copper
IMSA Spec 28-3 Copper-Clad Steel

"C" Wire Two Conductor, Black Polyethylene Jacket
IMSA Spec 29-1 Hard Drawn Copper
IMSA Spec 29-2 Copper-Clad Steel

Two Conductor, Red Polyvinyl Chloride Jacket
IMSA Spec 29-3 Hard Drawn Copper
IMSA Spec 29-4 Copper-Clad Steel

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