W. P. Law, Incorporated - Fluid Handling Professionals
The difference between a 2-wire and 3-wire pump is based on the type of motor that is used. A 3-wire single phase motor requires a control box with a starting capacitor. Because of this starting arrangement, the motor requires three "hot" leads (plus a lead for the ground connection) to operate correctly. It is called a “3-wire” due to the three “hot” leads, though there are actually four wires when you count the ground wire. The 2-wire motor requires no control box because is does not use a starting capacitor. Instead, a 2-wire motor has a built-in electrical device that is used to get the motor started. This only requires the pump to have two "hot" leads (plus ground), which is why it is called a “2-wire” pump. The confusion sets in when counting the total number of wires as a 2-wire pump actually has three wires and a 3-wire pump has four wires.

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MAIN OFFICE - LEXINGTON

303 Riverchase Way
Lexington, SC 29072

Phone 803-461 -0599
Toll-Free 800-476-4515
Fax 803-461 -0598
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MONDAY - FRIDAY
8:00am - 5:00pm

 

Summer Hours:

Effective March 11, 2017
thru August 26, 2017

SATURDAY
8:00 am - 12:00 pm
Counter Service Only

MONDAY - FRIDAY
5:00 pm - 6:00 pm
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CHARLESTON

3636 Belvedere Rd.
John's Island, SC 29455

Phone 843-559-3945
Fax 843-559-2740
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MONDAY - FRIDAY ONLY
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GREENVILLE

1330 Grove Rd.
Greenville, SC 29605

Phone 864-295-3810
800-660-7569
Fax 864-295-6990
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GREER

2400 Highway 101 S.
Greer, SC 29651

Phone 864-879-1045
877-835-0714
Fax 864-879-1 046
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MONDAY - FRIDAY
8:00am - 5:00pm

 

Effective April 2, 2016
thru August 27, 2016
SATURDAY
8:00 am - 12:00 pm
Counter Service Only

 

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