Proper NEC generator disconnect

[thammel]

I have a new compressor with 5hp baldor motor, FLA of 20.6 at 240 volts. Wanting to be NEC compliant, I know I need to be hardwired with a disconnect. I have 8 awg nm feeding the disconnect. I've done some searching and found a Square D D222ncp disconnect at amazon. This is rated for 60 amps and is a 2 pole 240 volt interior disconnect. What has me scratching my head is the following at Square D:
3 HP per NEC 240.6 or
10 HP per NEC 430.52.

Can somebody tell me if this means it is capable of 3 or 10 hp? If only 3HP, can someone point me to a 5hp capable disconnect?

If this disconnect is ok, I was thinking of using 40 amp dual element time delay fuses. I have lots of 8 awg THHN and will use this in flexible conduit from the disconnect to the compressor.

Thanks!

 

[wyliesdiesels]

I have a new compressor with 5hp baldor motor, FLA of 20.6 at 240 volts. Wanting to be NEC compliant, I know I need to be hardwired with a disconnect. I have 8 awg nm feeding the disconnect. I've done some searching and found a Square D D222ncp disconnect at amazon. This is rated for 60 amps and is a 2 pole 240 volt interior disconnect. What has me scratching my head is the following at Square D:
3 HP per NEC 240.6 or
10 HP per NEC 430.52.

Can somebody tell me if this means it is capable of 3 or 10 hp? If only 3HP, can someone point me to a 5hp capable disconnect?

If this disconnect is ok, I was thinking of using 40 amp dual element time delay fuses. I have lots of 8 awg THHN and will use this in flexible conduit from the disconnect to the compressor.

Thanks!

umm 240.6 has to do with standard ampere ratings. not sure what theyre getting at there.

article 430 deals with motors so thats what applies here.

I wouldnt bother with a fusible disconnect. get a non-fused disconnect such as an A/C condenser pullout disconnect.

If the breaker panel is within 50' of and is in within sight of the motor, then you dont even need a disconnect.