Did You Know About Electrical Label On Wire About Fire And Water Proof

Did You Know About Electrical Label On Wire About Fire And Water Proof. Here are some of the common labels written on wires.

1.  THHN

2.  THWN

3.  THW

4.  XHHN

The Meaning Of Each Letter Used In The Above Labels Is Given Below

T	Thermoplastic insulation, fire-resistant material
H	Heat-resistant; it can withstand temperatures of up to 167F.
HH	Resistance to excessive heat; it can withstand temperatures up to 194F.
W	Approval of “wet,” or wet and wet places; this wire is also suitable for dry places
X	Synthetic polymeric insulation with flame-retardant
N	Nylon coated to resist oil and gasoline

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