220 Radial Arm Saw
#1
220 Radial Arm Saw
Just want to make sure I'm wiring this correctly.
I need a 220 outlet for a radial arm saw. It's coming off a subpanel in the garage.
The saw is rated for 7 amps. It has a 3-Prong plug.
I was going to run 12/2 w/ground to a double pole 20amp breaker with the ground going to the ground bar in the subpanel.
Is this correct?
Also, when installing a double pole breaker, how do you check if it's on separate legs? Would the voltage between the two legs equal 220 or zero?
Thanks, Brian
I need a 220 outlet for a radial arm saw. It's coming off a subpanel in the garage.
The saw is rated for 7 amps. It has a 3-Prong plug.
I was going to run 12/2 w/ground to a double pole 20amp breaker with the ground going to the ground bar in the subpanel.
Is this correct?
Also, when installing a double pole breaker, how do you check if it's on separate legs? Would the voltage between the two legs equal 220 or zero?
Thanks, Brian
#2
Wiring with 12/2 is ok as long as the saw does not require a neutral for any electronics on it. Hook white and black to the double pole breaker and the ground to the grounding lug. You can't install a double breaker to where it is not properly positioned to pick up opposite legs. Voltage between the legs is supposed to be 240 volts. You will need a 240 volt receptacle and make sure the plug on the ras is configured for 240 volts as well.
#4
That would be a tandem configuration, not a two pole. THQPs are half inch breakers and for all intents and purposes serve the same purpose as tandems.
Maybe it should just be clarified that a 'double pole' breaker is one where the handles are tied together (or in the case of a QO panel, a two inch wide breaker with single handle)
Maybe it should just be clarified that a 'double pole' breaker is one where the handles are tied together (or in the case of a QO panel, a two inch wide breaker with single handle)
#5
Thanks Guys,
Looks like I'm OK.
The saw has a 220 plug, with the prongs aligned sideways.
There are no electronics on the saw.
I'll identify the white as hot with black tape.
Thanks, Brian
Looks like I'm OK.
The saw has a 220 plug, with the prongs aligned sideways.
There are no electronics on the saw.
I'll identify the white as hot with black tape.
Thanks, Brian
#6
That would be a tandem configuration, not a two pole. THQPs are half inch breakers and for all intents and purposes serve the same purpose as tandems.
Maybe it should just be clarified that a 'double pole' breaker is one where the handles are tied together (or in the case of a QO panel, a two inch wide breaker with single handle)
Maybe it should just be clarified that a 'double pole' breaker is one where the handles are tied together (or in the case of a QO panel, a two inch wide breaker with single handle)
#7
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#9
Thanks, Scott. Likewise, I was unaware there were half breakers with tied handles to occupy one space. Live and learn. We'll clarify, a normal sized breaker can't be installed to where it will only pick up one leg. Question....what would these be used for MWBC?
#10
They can be used for a MWBC or for (in the case of the linked example) a 15 amp 240 volt application such as an electric heater. The 2 pole type THQP (thin) breakers are available through 50 amps as far as I know. In other words,they could be used for an electric water heater, central a-c unit, electric range, electric dryer, etc. That being said, I don't like them and wouldn't recommend using them, especially in aluminum bus GE loadcenters. They are, however, U.L. Listed.