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carpenter
Lv 4
carpenter asked in Science & MathematicsEngineering · 9 years ago

what is the correct wire sizes in the Philippines for household 20a and 30a breakers?

Using thhn for singlewire 220v. is it 14g for 20a and 12g for30a?

2 Answers

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  • texasmaverick
    Lv 7
    9 years ago
    Favorite Answer

    The 20 amp breaker requires a #12 AWG minimum.

    The 30 amp breaker requires a #10 AWG minimum.

    If you have a very long circuit, you may want to increase the size, based on your allowable voltsge drop.

    TexMav

    TexMav

    Source(s): Retired electrical engineer
  • Anonymous
    9 years ago

    No.12 Awg or 3.5mm>2 is good for 20 amperes only.Circuit Breaker is 20 amperes. No.14 AWG is rated only for 15 amperes.

    Source(s): NEC and Philippine Electrical Code. PEE.
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