THHN suits dry indoor areas, while THWN is better for damp zones such as bathrooms, kitchens, and exterior spaces. In hot Saudi climates, choose THWN near moisture and THHN for dry interiors, matching the correct gauge to the electrical load.
Yes, if you select the right gauge, insulation, and certified quality for Saudi or international standards. They handle high heat, but avoid direct burial without protective conduit, especially in humid areas like Jeddah and Mecca. Matkel offers approved options for residential and commercial projects.
The correct gauge depends on current load and cable run length. Lights often use 1.5 or 2.5 mm, kitchens and washing machines usually need 4 mm, and main units may need 6 mm or larger. Always consult a licensed Saudi electrician before purchase.
Do not bury THHN or THWN wire directly, because it is not an underground cable. Install it inside approved protective conduit or select a dedicated direct-burial cable. In Saudi Arabia, sandy soil and groundwater can raise humidity, so proper protection is essential.
Spools are commonly 90 or 100 meters, depending on gauge and color. Matkel provides competitive wholesale options for contractors and projects across Riyadh, Jeddah, and Dammam. Confirm your tax invoice and replacement warranty before placing a bulk order for site work.