Glow wire testing is performed on plastic materials used in electrical devices. It assesses the plastic’s ability to resist ignition and to self extinguish if ignited. As a safety test its purpose is to prevent the start or the spread of fire in the event of an electrical component becoming overheated.

Variants of the glow wire test include:

  • Test method for end products (GWEPT)
  • Material flammability index (GWFI)
  • Ignition temperature (GWIT)

Many product standards call for a glow wire test, including household appliances (commonly called white goods) in IEC60335-1, luminaires in IEC60598-1, and electrical control panels and distribution boards in IEC61439-1.

Individual product standards will state the glow wire test method to use. If you need to put your product through specific proving, our highly experienced test engineers will work with you to select the most appropriate test method that proves your requirements.

You may need to prove that your product maintains its flame resistance after a period of exposure to weather. We can complement standard glow wire testing with conditioning to simulate real-life situations.

Examples of environmental conditioning are:


IEC 60695-2-11
Glow-wire flammability test method for end products (GWEPT)

IEC 60695-2-12
Glow-wire flammability index (GWFI) test method for materials

IEC 60695-2-13
Glow-wire ignition temperature (GWIT) test method for materials

ASTM D6194-14
Standard Test Method for Glow-Wire Ignition of Materials


We offer a range of reports and certificates to meet your requirements.

Please visit the certificates and reports page for further information.

kA Testing Facility,
John Street,
New Basford,
NG7 7HL,

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