jbraunlich
New member
- Location
- Mentor, Ohio, United States
What does the suffix ( -2 ) mean on a conductor. Example THWN-2
Conductor marking
- Thread starter jbraunlich
- Start date
- Status
- Location
- Massachusetts
It means it is rated 90C wet or dry
THWN/THHN is rated 75C wet 90 C dry
THWN/THHW-2 is rated 90C wet or dry
THWN/THHN is rated 75C wet 90 C dry
THWN/THHW-2 is rated 90C wet or dry
K8MHZ
Senior Member
- Occupation
- Electrician
From Table 310.13, note 4
"Listed wire types designated with the suffix "2", such as RHW-2, shall be permitted to be used at a continuous 90 C operating temperature, wet or dry."
"Listed wire types designated with the suffix "2", such as RHW-2, shall be permitted to be used at a continuous 90 C operating temperature, wet or dry."
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