1. 250.122(B)

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4. For circuits rated under 30-amperes, increasing the EGC in proportion to the ungrounded conductor is unnecessary and results in the EGC being larger than what would be required for circuits using the same conductors on higher circuit ratings. For example, #10 AWG conductos are increased in size to #8. Per the current 2005 wording of the section, the EGC would be required to be increased to #8 as well. However, the same #10 AWG conductors could be used on a 40-ampere branch circuit with a #10 AWG EGC. If a #10 AWG EGC is sufficent for a 60-ampere circuit, where #6 AWG conductors are used for ungrounded conductors, why wouldn't #10 AWG EGC be sufficent on a 30-ampere circuit where #10 AWG conductors are used for ungrounded conductors.

We have had this discussion on this Forum several times and think this issue merits a change.

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**(B) Increased in Size.***For circuits rated greater than 60-amperes,*and where ungrounded conductors are increased in size, equipment grounding conductors, where installed, shall be increased in size proportionately according to circular mil area of the ungrounded conductors.4. For circuits rated under 30-amperes, increasing the EGC in proportion to the ungrounded conductor is unnecessary and results in the EGC being larger than what would be required for circuits using the same conductors on higher circuit ratings. For example, #10 AWG conductos are increased in size to #8. Per the current 2005 wording of the section, the EGC would be required to be increased to #8 as well. However, the same #10 AWG conductors could be used on a 40-ampere branch circuit with a #10 AWG EGC. If a #10 AWG EGC is sufficent for a 60-ampere circuit, where #6 AWG conductors are used for ungrounded conductors, why wouldn't #10 AWG EGC be sufficent on a 30-ampere circuit where #10 AWG conductors are used for ungrounded conductors.

We have had this discussion on this Forum several times and think this issue merits a change.

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