Sp Sw for 1 1/2 hp motor

[mark32]

I need to install a single pole switch for a 1 1/2 hp pool motor. (Motor is rated for 15a@120v) Seems most of the 20a sp switches I see are rated for a 1 hp motor so I went to a supply house and was told they didn't stock any and he didn't know of any available. Can I just use a heavy duty 20a sw? Changing the circuit to 240v would be an option but a DP GFCI breaker is expensive so I'd like to avoid that if possible.

 

[masterinbama]

I would install something like this.

http://www.drillspot.com/products/42824/Hubbell_HBL7842D_Manual_Motor_Switch

Otherwise you will be hounded by callbacks.

 

[dicklaxt]

deleted
dick

 

[raider1]

Take a look at 430.83(C) for the ratings of general-use snap switches used as motor controllers for stationary motors rated 2 HP or less.

Chris

 

[kwired]

Is the switch used as a control, disconnecting means or both? There are higher capacity snap switches available, you could also use a circuit breaker, molded case switch, fused or non fused disconnect as combination control and disconnect, or use a light duty switch and contactor for control purposes - you likely still would need a disconnecting means in almost all cases.


Another possibility:

GFCI protect feeder to a small panel and feed all pool related equipment from this panel with non GFCI breakers. You only purchase one GFCI, however troubleshooting the tripping GFCI gets a little harder because one faulty component makes everything shut down.



Have you ever noticed that customers can afford pools and spas but can't afford to hook them up? And are willing to risk their lives by having their friend or relative who is 'good with tools' hook it up for a beer and opportunity to use the pool or spa.

Spend a little more on a good install now or spend more on trouble calls later.

 

[mark32]

Thanks for all the responses. I have an idea, a Leviton 30a double pole has a fla rating of 24a and a 2 hp rating at 120v and 240v, which will fit the bill.

Raider, I looked at that article, thanks by the way, but it doesn't look like a 20a sw will make the cut with this motor.

 

[LarryFine]

Mr. 'Bama's 1p switch is rated at 2HP at 120v. That's the one I'd use.

In my opinion, all dual-voltage motors should be operated at the higher voltage.

Another possibility:

GFCI protect feeder to a small panel and feed all pool related equipment from this panel with non GFCI breakers. You only purchase one GFCI, however troubleshooting the tripping GFCI gets a little harder because one faulty component makes everything shut down.

If an electrician wired my pool equipment that way, I'd be in legal trouble.

 

[iwire]

As long as we are giving opinions ....

As long as we are giving opinions ....

In my opinion, all dual-voltage motors should be operated at the higher voltage.

In my opinion each job should be designed on it's own merits and not some rule of thumb.

KWH wise the voltage is all but irrelevant.

 

[readydave8]

In my opinion, all dual-voltage motors should be operated at the higher voltage.

why?

 

[LarryFine]

Lower current, along with associated lower voltage drop, heat, etc.

Of course, that was a generalization; and, of course, Bob is correct.