Fused Disconnect switch for Motors

[funseebee]

Does NEC requires a fused disconnect switch or a non-fused disconnect switch for motors? Why?

 

[augie47]

The need for (or lack thereof) a disconnect for motors is covered by 430.102(B).
In general, if a safety switch is used, it can be fusible or non-fusible.

 

[chris kennedy]

Motors require overload protection which in most cases is different from the ground fault/short circuit protection. Can be accomplished with internal thermal protection built in to the motor, a motor starter with over load protection or a fused disco. See 430.31 for starters.

 

[m sleem]

One solid difference i was learned from this excellent forum,
where use the non-fusible disconnect the OCPD of the branch would fall under 430.52 & 430.22 for branch's conductor's ampacity.
where use the fusible disconnect the OCPD of the feeder would fall under 430.62 & either 310.15(b)(16) or 430.24 for feeder's conductor with taking into account the feeder when applied 310.15(b)(16) the feeder shall be protected by the OCPD. i understand you can follow 310.15(b)(16) or 430.24,
"bit confused":? may be we can get some help from moderators!!!