What is XHHW or thhw ratings of conductor wire?
XHHW is an alphabetism or initialism which stands for "XLPE (cross-linked polyethylene) High Heat-resistant Water-resistant." XHHW is a designation for a specific insulation material, temperature rating, and condition of use (suitable for wet locations) for electrical wire and cable.
Is XHHW wire rated for cabletray?
XHHW-PVC Jacketed Tray cables are some of the most widely used, and versatile cables available today. They can be used in Cable Tray, Conduit, and they are approved for Direct Burial as well. Our cables are (UL) approved, rated 600 Volts 90C. They are all Copper conductors, and come with a bare copper Ground Wire.
What is the difference between insulation types THW and THWN?
XHHW: What Is the Difference?
- THHN / THWN / THWN-2. The most popular type of building wire used in construction is Thermoplastic High Heat-resistant Nylon coated (THHN) wire.
- XHHW and XHHW-2. ...
- Comparison: In addition to the specifications noted above, the main difference between THHN / THWN / THWN-2 and XHHW / XHHW-2 and is in the wire’s jacket.
What is XHHW wire used for?
XHHW wire is generally used in residential, commercial and industrial buildings and installations for the purpose of power distribution. The cable is manufactured in both copper and aluminum conductors and typically ran in conduit or other approved raceways for services, feeder and circuit wiring.
Is XHHW thicker than Thhn?
Surprisingly, even though XHHW has a thicker and more protective jacket, it is also more flexible than THHN wire. This is due to the XLPE insulation of the XHHW allowing the cable to bend and flex more easily than the PVC insulation of the THHN – making XHHW much easier to work with during the installation process.
Is XHHW more flexible than Thhn?
Flexibility. Even though its jacket is thicker and more protective, XHHW is also more flexible than THHN wire. The XLPE insulation of the XHHW allows the cable to bend and flex better than the THHN's PVC insulation—so XHHW is much easier to work with during the installation process.
What does XHHW stand for on wire?
High Heat-resistant Water-resistantXHHW is an alphabetism or initialism which stands for "XLPE (cross-linked polyethylene) High Heat-resistant Water-resistant." XHHW is a designation for a specific insulation material, temperature rating, and condition of use (suitable for wet locations) for electrical wire and cable.
What is XHHW-2 wire used for?
Often used as building wire XHHW-2 can be used in power circuits run in conduit from the utility meter to main circuit protection panels. It can also be used in conduit from circuit protection panels to uses throughout a building. Some other uses are machine tool wiring, appliance and control circuits.
Can XHHW be used in conduit?
XHHW-2, or XLPE High Heat-Resistant Water-Resistant, Wire is a general-purpose wire suitable for use in conduit, raceways, feeders, and branch circuits. It is also often found in power distribution systems in industrial, commercial, and residential buildings.
Can XHHW be buried in conduit?
This aluminum building wire is intended to be used for general purpose applications in conduit, underground in conduit, or in any other recognized raceways for services, feeders, and branch-circuit wiring. XHHW-2 wire is generally used for power distribution in residential, commercial, and industrial buildings.
Can XHHW be used indoors?
XHHW-2 can be used indoors, outdoors, in a raceway, not in a raceway, underground, in wet locations, and exposed to direct sunlight. It's robust and universal. Many contractors buy it in bulk and use it everywhere.
Is XHHW outdoor rated?
XHHW-2 is rated up to 90° C in both wet and dry environments. THHN is rated up to 90° C in dry environments only. Dual-rated THHN/THWN carries a 75° C wet-environment rating. The 0.004” nylon jacket on the THHN is hydroscopic (that is, it absorbs moisture), which prohibits its use in wet locations at any temperature.
Is XHHW rated for sunlight?
Q: Can XHHW-2 be rated for Sunlight Resistance? A: Yes. Black XHHW-2 Conductors sizes 8 AWG and larger are marked “Sunlight Resistant.”
Is XHHW direct burial?
3.3. 1 Type XHHW/XHHW-2 cable shall not be used in direct burial applications.
Is XHHW oil resistant?
For use in harsh environments for general wiring applications for lighting and power in conduits, ducts, cable tray when CT rated, or other approved raceways with maximum conductor temperature of 90°C in wet or dry locations. XHHW wire is also chemical, gasoline and oil resistant.
What use is Thhn wire suitable for?
THHN (Thermoplastic High Heat-Resistance Nylon coated) is a cost-effective building wire that is typically used for carrying electrical currents between buildings and external power sources, signaling, control wiring, machine tools, and automation systems.
What is the difference between XHHW and THHN?
The main difference between XHHW/XHHW-2 and THHN/THWN-2 is in the wire’s jacket. The different letters in names denote particular properties of each cable, and each provides the cable with varying levels of insulation:
What is the temperature rating of XHHW-2?
XHHW-2 has the same properties as XHHW, but the "-2" denotes improved insulation. XHHW-2 temperature rating: 90ºC in both dry and wet locations. The jackets on the THHN family are thinner than those of XHHW wires.
Is XHHW wire flexible?
Flexibility. Even though its jacket is thicker and more protective, XHHW is also more flexible than THHN wire. The XLPE insulation of the XHHW allows the cable to bend and flex better than the THHN’s PVC insulation—so XHHW is much easier to work with during the installation process.
What is the difference between THHN and XHHW?
What's the Difference? THHN/THWN-2 is a thermoplastic product, while XHHW-2 features thermoset insulation. Thermoplastic and thermoset are two types of cable insulations commonly used for single conductors. It’s important to understand their strengths and weaknesses when designing and building a new facility, machine, or appliance.
Is THHN a thinner insulation?
It uses a thinner PVC insulation, which can lead to current leakage and dielectric breakdown in demanding circuits or from chemical or environmental exposure. The PVC insulation in THHN/THWN-2 emits a toxic smoke when burned and is less flexible at cold temperatures. However, it is lighter in weight and less expensive to manufacture.
Power Cable
Power cables are mainly used for power transmission and distribution purpose. It is an assembly of one or more individually insulated electrical conductors, usually held together with an overall sheath. The assembly is used for transmission and distribution of electrical power.
Bare Overhead Conductor
Bare Overhead Conductors are used in overhead transmission and distribution network applications.They are also used for un-insulated hook ups, jumpers, grounding conductors and other applications.
Aerial Bundled Cable
Aerial bundled cables (also aerial bundled conductors or simply ABC) are overhead power lines using several insulated phase conductors bundled tightly together, usually with a bare neutral conductor. Our abc calbe conform to ASTM, IEC, SANS standards.……Including: abc cables, cvered line wire, service drop wire etc.
THHN vs XHHW – Page 2 – Mike Holt Enterprises
The fundamental difference between the two wires are the thermal response to overload and short circuit. TH** is thermoplastic and XHHW is thermosetting.
Building Wire and Cable Designations
Building Wire and Cable Designations; … Also rated THHN. THHN: … XHHW-2: Cross-linked Polyethylene Insulation (X) …
What is XHHW 2?
Similar to that of THHN/THWN-2, XHHW defines Cross-linked High Heat Water-Resistant and XHHW-2 is the upgraded version of XHHW. Its usage is into residential, commercial and industrial building wiring. Apart from that, it's also used in the feeder, raceways and circuit wiring.
What is the difference between THHN and THWN-2?
Primarily, the difference is in the name itself. THHN stands for Thermoplastic High Heat-Resistant Nylon-coated and THWN stands for Thermoplastic Heat and Water-Resistant Nylon-coated.
How many strands does a copper conductor have?
The copper conductor, in order to remove the internal stress and strengthen the material, it is undergone through full annealing process further finishing it into the stranded or bare structure according to ASTM (American Standard for Testing and Materials) B3 and B8 with conductors ranging from 3 to 4 and strands between 7 to 19.
Why is nylon jacket used in cable?
Since the cable has such a wide range of applications, it is designed to ensure the transmission of current, stability of function and secure installation.
Is XHHW better than THHN?
XHHW might be slightly costlier than THHN, but worth the safety factors as it's coating is more resistant to chemicals ozone and abrasions. While XHHW/ XHHW-2 offers higher advantages, THHN/THWN-2 meets the needs of many applications and is still a popular choice among the customers because of the low budget. Share.
What is THHN Cable
THHN is a code for thermoplastic high heat resistant nylon coated wire which is allowed for use in dry to damp location and rated for a maximum temperature of 90ºC (194ºF).
What is THWN Cable
THWN is a code for thermoplastic heat and water resistant which is suitable for use in both dry and wet locations with a maximum temperature rating of 75ºC (167ºF).
