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Subject - Motor fusing
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master elec.
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I have a 480volt single phase motor to which I'm adding supplemental overload protection in the form of in line fuses. Do I need to instal 1 or 2?
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Wirenutz
| Table 430.37 addresses this
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master elec.
| Thanks, I already checked in code quite extensively but can't seem to find exact clarifacation of the use of one or two fuses.
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kbsparky
| If you are using fuses for supplemental protection, then you need to use one in each ungrounded conductor:
quote:
430.36 Fuses - In Which Conductor. Where fuses are used for motor overload protection, a fuse shall be inserted in each ungrounded conductor....
emphasis added
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master elec.
| Thanks, thats exactly what I thought.
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