Type MC-HL cables are a special type of armored conductors designed for control systems. These products’ design have continuous sheath welded along their length for uttermost protection against punishing operating environments. The acronyms MCHL stand for Metal Clad Hazardous Location. So if you need a high crush and impact systems control cables tailor made for a punishing environment then you need to buy mchl cable and you can be sure of uttermost performance in the long term.
Nassau Nation cable has a wide variety of mchl cables for sale. Our cables qualify for Div 1 of NEC specifications and Zone 1 of the Canadian certifications. Unlike their closest substitutes; interlocked Teck 90 cables, the mchl cables have a continuously welded protection giving a much stronger protective cover for the conductor. This armor is an impervious seal which protects the underlying conductor from water, moisture, chemicals, heat, UV rays and abrasion. The interlocked cables could be a more flexible option for control panels but if you want more protection in a corrosive environment, buy mchl cable.
Types of MC-HL cables
There are as many types of mchl cables for sale as the unique needs of our customers. The types are dictated by domestic and international specifications governing cable use. For instance, some mchl cables have an aluminum armor while some designs have a galvanized steel sheathing. The variations between the types is based on the sheathing material and the conductor size. However, all mchl cables are developed to resist external damage.
What to look out for before you buy mchl cables
Generally, mchl cables are made of four bare annealed copper conductors in accordance with ASTM B-3. 10 AWG or smaller versions of the armored cables are often compressed as per class B stranding specified on ASTM B8 while 8 AWG sized mchl cables are compressed as per ASTM B496. Besides the conventional conductors, they also have a grounding conductor made of stranded bare copper conductor in accordance with ASTM B3 and B8. This grounding conductor offers a ground-fault current connection preventing electrocution in case of fault currents. The grounding wire is developed in adherence to NEC table 250.122.
The color codes for the four conductors of mchl cables are as follows:
- Conductor 1- Black
- Conductor 2 -Red
- Conductor 3 -Blue
- Conductor 4 -Orange
Mchl armored cable have their conductors insulated with cross-linked polyethylene, commonly referred to as XLPE. Cross-linking is the process by which complex plastic molecules are compounded to develop three dimensional molecular bonds making an insulating material with high tensile strength, high chemical resistance and low heat deformation.
It’s the mchl cable jacket that puts its internal components together under one structure. The jacket is made of black Polyvinyl Chloride (PVC). PVC offers a good resistance to deterioration by sunlight and is oil resistant. The jacket is developed as per UL 1569 and has a temperature rating of 90°C.
It’s the armor that make mchl cables specialized for their applications. You surely want to be keen on this because in has a direct bearing on the cable’s resistance to external damage. This armor is often an impervious, continuously welded and corrugated aluminum alloy.
Applications of mchl cables
This is probably the first factor you’ll have in mind when looking for mchl cable for sale. These cables have a wide range of applications including but not limited to:
- Designed for use on power or control circuits
- Can be installed in cable tray, wire ways, racks, or buried directly
- This cable has three symmetrically placed grounds to reduce problems associated with pulse-width modulated AC drives
- Suitable for VFD applications.
- Suitable for exposure to hazardous locations, Type MC-HL for Classes I, II, and III Division 1 and 2
Standards and Certifications
- UL 44, XHHW-2
- UL 1309 Marine Shipboard
- UL 1569 Type MC and UL 2225 Type MC-HL
- UL 1581
- Designated Type MC as per NEC Article 334
- IEEE 1202 available upon request
Nassau National Cable offers many mchl cables for sale online. To browse our selection of mchl cables, please visit our website today!
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