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What is the minimum size aluminum se cable feederwhen installed in thermal insulation?

2 Answers

  • KMA
    Lv 6
    9 years ago
    Favorite Answer

    Wire is sized according to the amps to be supplied. So you need to tell us what size panel you wish to feed.

    I believe the minimum size residential panel is now 150 amps which equates to 2/0 al SE. A 200 amp panel would need 4/0 al SE.

    When you say "thermal' insulation are you referring to blown in fiberglass or rolled in type?

    Source(s): a licensed electrician
  • Howard
    Lv 4
    9 years ago

    There is no minimum size requirement, if thermal insulation is the only factor.

    The normal factors involved are:

    1) the rating of the protecting overcurrent device (usually 30A, 60A, 100A, 150A or 200A)

    2) the highest air temperature the cable will be exposed to (usually about 120 degrees F)

    3) whether or not it is "bundled" with other cabling (usually not)

    4) the real current that the load consumes (cable capacity must be bigger)

    5) the calculated current the load will consume (cable capacity must be bigger)

    6) the length of the cable (usually moot unless it's hundreds of feet long)

    7) wet or dry installation (usually wet/outdoors)

    8) temperature rating of connecting terminals (usually 60 degrees C)

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