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Most common rated insulation for control wiring

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  1. E-DivMafia is offline Junior Member Pro Subscriber
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    Most common rated insulation for control wiring

    Which is the most common rated insulation for control wiring?

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    Quote Originally Posted by E-DivMafia View Post
    Which is the most common rated insulation for control wiring?
    It’s 600V. That’s the common insulation class for panel wire

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    Quote Originally Posted by E-DivMafia View Post
    Which is the most common rated insulation for control wiring?
    When I hear control wiring I think switchgear, which is normally 600V rated SIS wire.

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    Quote Originally Posted by RickYoungblood View Post
    It’s 600V. That’s the common insulation class for panel wire
    Is there a table or something where these values can be looked up?

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    Quote Originally Posted by Ronwilson1801 View Post
    Is there a table or something where these values can be looked up?
    I am not aware of one, but would be interested to know as well.

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    Quote Originally Posted by E-DivMafia View Post
    I am not aware of one, but would be interested to know as well.
    NEC Table 310.104(A) provides application and insulation ratings for 600V class wire.
    NEC Table 310.15(B)(16) provides ampacities.

    SIS (insulation rating 90C) is what I would first think to use in most switchgear control wiring applications, but it can vary based on actual need in a substation or switchgear.

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    Quote Originally Posted by E-DivMafia View Post
    I am not aware of one, but would be interested to know as well.
    Here is a PDF with various tables from NEC Article 310, might be worth a look: https://www.houwire.com/pdf/Article_...ral_Wiring.pdf

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