THHN wire can be laid exposed.
THHN wire are widely used in household appliances, aerospace systems, buildings, and lighting due to their excellent electrical and physical properties, such as good heat resistance, corrosion resistance, self-lubricating properties, and oil resistance. Its rated working voltage is 450/750V, and its long-term working temperature can reach 90 ℃ or 75 ℃, and it can be installed in environments above 0 ℃. These characteristics make THHN cable suitable for use in various environments, including exposed laying. In addition, the bending radius of THHN cable should not be less than 4 times the outer diameter of the cable, which is also an important factor in maintaining good performance during exposed laying.
In summary, THHN wire can indeed be used for exposed laying due to their excellent performance and wide range of applications.
