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Speedaire 4b221 I need a manual. Also,help wiring pressure switch. What size wire does it take to go switch to motor and switch to wall & length

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: need help wiring new pressure switch for craftsman air compressor

Assuming that you are wiring for 115v. Lets start with the ground. The cord that attaches to the wall outlet will have three wires, green, black , and white. Insert the cord thru one of the openings of the pressure switch and attach the green wire to the ground screw. Next look very closely at the contacts and notice that they are arrainged in pairs. There is a small brass bar with two contacts that completes the circuit for each line. Start with L1 and attach white wire from cord, then attach white wire from motor to the screw terminal that small brass bar bridges to (should be T1). Next attach black wire from cord to L2 and black wire from motor to remining screw. Remember that the small brass bar with two contacts is the bridge and simply connects white to white and black to black. Enjoy

Posted on Dec 16, 2008

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darjr
  • 378 Answers

SOURCE: wiring installation for ss5l5 IR 5hp 60 gallon compressor

A #10AWG wire can be use and 40Amp breaker can be use also. Your 5hp/230V/1/60hz motor amp is 30A.

Posted on Jun 01, 2009

dmftrucker
  • 1922 Answers

SOURCE: when wiring up 240v of power to compressor what is

blk/red are your two 120 volt lines the white is your neutral, if this is a 120/240volt combination motor make sure you change the wiring in the motor configuration to make it 240volt from 120volt

Posted on Sep 25, 2009

  • 54 Answers

SOURCE: A DIRECT DRIVE COMPRESSOR & THE PRESSURE SWITCH IS FAULTY

STOP! Your pressure switch is doing what it is supposed to, but the tank check valve is leaking. This valve is usually at the tank where the line from the compressor head enters the tank. The small tube line from the pressure switch probably also goes to this valve. You'll need to clean or replace it.

Posted on Nov 17, 2009

compman66
  • 169 Answers

SOURCE: i have a ingersoll rand type-30,model#2475 7.5

from what you are describing it sounds like you are missing a couple wires somewhere or you do not know what you are looking for. The pressure switch, low oil switch motor starter coil, and overload relay should be wired in series to provide a control circuit for the motor starter. I would highly advise seeking the help of a certified electrician if you are not experienced in working with these machines. You can not only risk personal injury, but also damage a lot of expensive electrical item's real quick if it is not done correctly.

Posted on Dec 06, 2009

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I need Pressure Regulator for Speedaire 3Z355H


The pressure regulator does not have to be specific for your compressor. You just need to get the right line size and pressure range you are needing. You might be able to get one from Home Despot or Lowest, but I would look on Amazon. I am sure you can get it from Grainger, but you will pay a premium price. If you are on a budget, check Harbor Freight if you can.

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Air compressor will not start


An electric air compressor motor may start up fine on an empty tank but not when the tank has air in it. Additional torque and power is required to start when not empty. The electric wires may be too small or their length too long and represent electric resistance in the circuit. Larger gage wire will have less resistance and provide more power at motor start up under load.
A motor uses 6 times the amps when starting, a normall size and length wire is capable to deliver this power momentarily. The problem is when the wire is lengthened without using a larger gage wire. Resistance consumes power and the wire resistance will consume power causing a voltage drop to the motor. A motor, as most electric loads needs plus or minus 10% of its rated voltage to operate. What I'm saying is that a larger gage wire must be used, 1 gauge size to 25 feet, 2 gage sizes to 50 feet, or more size larger when using extension chords depending on length. I keep some romex of heavy gage with chord ends on it to use as temporaty long extension chord for compressor or welder use.

on Feb 12, 2015 | Air Tools & Compressors

1 Answer

Spring loaded connectors that hold wire into each hole


Hi Chris,

According to page 31 of the brochure, the switch accepts up to a #18 gauge wire ans is suitable for a 6 amp load at 125 volts or a 3 amp load at 250 volts. I recommend use of a solid conductor for this switch - but you could use a stranded wire type with similar results if you "tin" (solder) the wires first. I would not recommend the use of stranded wires with this switch. If you attempt to push a larger wire into the terminal opening, you could damage the spring metal contacts - rendering them inoperable.

The National Electrical Code limits the smallest sized wires installed in buildings to a #14 gauge wire. This is two sizes greater than the 18 gauge wire allowed by this switch. For this reason, the switch is designed to interconnect fixture wires only - not for use between the home wiring and the fixture wires.

If you need to connect a switch between the home wiring and the fixture, you should use a switch that has wire leads on it already, or install a short length of the smaller 18 gauge wire with an insulation rated for at least the voltage of the circuit (thermostat, doorbell, network, telephone wire is NOT acceptable) into the switch, and use a wirenut to connect the home wiring to the 18 gauge wires.

I hope this helps & good luck!

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1 Answer

How do I wire my 60 gal 3 hp IR commpressor? What size wire, what size breakers, and where on the motor do I attach my wires. Motor says 15 amp, 220 volt. Thanks, Clint


I would use a # 10 wire size with a 30 amp breaker. The motor should already wired to the pressure switch unless it has a mag starter. If no mag starter incoming power should go to pressure switch not motor. If unit has a mag starter incoming power should go to top of mag starter.

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I Am installing a Generac 20Kw air cooled unit with a 200 amp service disconect ATS What size conductors do i use from the generators 100 amp breaker to the transfer switch


It is always good to install a large enough wire where the maximum load can be drawn plus a little extra for safety. 7 gauge wire will do, if it was mine I would use 6 gauge wire. If the length is over 20 feet but not longer than 80 feet go to the next larger size wire.

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1 Answer

We've purchased a Kobalt 60 Gallon, Volt 208-240, AMP 15.0 Air Compressor, Item #221565, Model #LLA3706056 without wiring diagram. Can you provide any assistance with this or refer me to a site that...


Your compressor is designed to be used in a shop situation (not portable) and is usually wired to a switch box similar to how your central air condenser is wired. It can however be wired with a short cord to a 220v plug. Your compressor motor is most likely wired to the pressure switch so all that you need do is to connect your pigtail from the pressure switch to the wall. You can buy all the parts that you will need at Lowes. You will notice that your motor has two wires going thru the contacts of the pressure switch. The inside cover of the switch will clue you in to wiring but if it does not have an illustration just match the black to black and white to white (110 v lines) and green to the ground screw at the pressure switch. Here is a good web site for another view: http://www.ehow.com/how_5041165_wire-air-compressor.html

Nov 04, 2010 | Ingersoll Air Tools & Compressors

1 Answer

I have a 2hp compressor motor that keeps tripping the breaker after about 5 minutes of use. i have changed the caps but it keeps popping the starter cap. is the motor just bad?


Our 2 HP Speedaire horizontal tank compressor is rated 115 / 230 volts at 24 / 12 amps, respectively. This means at 115 volts, a 30 amp circuit breaker is the bare minimum. That also means that the wiring should be #10 copper wires for short runs, but the next size up; #8 copper wires would be better connected to a 40 amp circuit breaker. Running at 230 drops the amperage requirement by half, to 12. A #14 copper wire is minimum for short runs with a double pole 15 amp circuit breaker, but #12 copper wires connected to a double pole 20 amp circuit breaker would be better choice.

If the compressor is cord connected (or even directly wired) with the minimum sized wires, it will likely a voltage drop problem unless very close to the panel. This problem is more pronounced as the distance between the circuit breaker and motor increases, or when smaller wires are in the circuit. All the voltage at the circuit breaker does not reach the motor, as it is lost as heat; so the compressor only sees 90 to 105 volts instead of the 115 volts it expects.

If the cords, connections, etc are getting hot, it is a tell tale sign of under-sized wires and /or poor connections. Once you solve these problems, the compressor should run "as advertised " because motors usually don't "go bad" but fail all at once. Unless you have a bearing problem - or there is a problem with the load itself (compressor).

I hope this helped.

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Wiring installation for ss5l5 IR 5hp 60 gallon compressor


Here are the specs on your compressor:
Electric Single Stage Air Compressor, Motor Running Power 5.0 HP, Free Air Flow @ Maximum Pressure 16.1 CFM, Free Air Flow @ 90 psi 18.0 CFM, Maximum Pressure 135 PSI, Phase Single, Voltage Rating 230 Volts, Current Rating 21.5 Amps, Tank Capacity 60 Gallons, Tank Type Vertical, Height 71 Inches, Length 20 Inches, Width 30 Inches, NPT Outlet (F) 1/2 Inch, 60 Hz
Good luck with your new comressor.

Mar 21, 2009 | Air Tools & Compressors

2 Answers

I want to put a on and off switch just like a light switch in the wiring for my compressor. It has a 40 amp breaker and is a 220 volt compressor. I have a 30 amp, 600 volt switch and I need to know if this...


NO U SHOULD NOT USE THE 30 AMP. SW, THE SW SHOULD BE THE SAME SIZE AS THE PROTECTION AT THE PNL! AND THEY SHOULD BOTH BE THE SIZE THAT IS STATED ON THE NAME PLATE ON YOUR COMPRESSOR, U CAN USE A 220 VOLT SINGLE PHASE NONE FUSED 60 AMP INDOOR OR OUTDOOR TYPE DISCONNECT FOUND AT ANY ELECTRICAL SUPPLY HOUSE, AROUND $20-30 IF I HAVENT BEEN UNDER AROCK FOR LONG! THIS BY THE WAY IS NOT TO BE MOVABLE, SWITCH NEEDS TO BE MOUNTED TO SOMETHING LIKE A WALL OR COLUMN. GOOD LUCK AND BE CAREFUL WITH THE JUICE!

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