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For Troubleshooting aid. |
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Notice: |
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NEC is a registered trademark of the National Fire Protection
Association, Inc. All NEC references by Electrical Helper are
interpretations of the NEC by the Electrical Helper staff and are not
NEC statements. The official position of the NEC requires that the NEC
be referred to in its entirety. |
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Article 430.22 |
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Describing a single motor states: Conductors supplying a single motor
for continuous duty shall have an ampacity of not less that 125
percent of the motor's full-load current determined by 430.6(A)(1). |
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Article 430-24 |
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Several Motors or a combination motor and other loads states:
Conductors supplying several motors, or a motor(s) and other load(s)
shall have an ampacity of not less than 125 percent of the full-load
current rating of the highest rated motor plus the sum of the
full-load current ratings of all the other motors in the group, as
determined by 430.6(A), plus the ampacity required for the other
loads. |
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Please Note: |
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Section 430 of the NEC is extensive and should be referred to in detail
before sizing your conductors. |
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Click Here For 3-Phase AC
Motor Full Load Current Ratings. |
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Click
Here For Troubleshooting aid. |
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