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It is a federal pioneer panel and down the center is silver squares. I had the double pole breaker in one of the squares but had to move it down so it was connected to 2 of the squares. I always thought a double pole breaker could be installed anywhere in the panel to give 240v but that is not...

As for the on and off switch the 1phase mag switch I purchased came with the switch already wired. The switch does not need to be a high amp capable switch as you are only turning on/off the low amp coil with the switch. The coil energizes and physically closes the high amp contacts which powers...

I have just finished a 5hp compressor install requiring a magnetic starter. I purchased a 1 phase mag switch but you can use a 3 phase mag switch to power a 1 phase motor. It simply requires adding a jumper wire to "trick" the overload into thinking there is 3 power legs I am no expert I simply...

Well thanks for the help and here is update. This has been quite a annoying project. I needed a new fitting for the discharge line into tank. No one stocks 3/4 inverted flare fittings so I ordered through Fastenal. Next I had to make a new 3/4 discharge line but my flaring kit stops at 1/2". I...

I would not put a switch on the outside for one main reason. If you have to turn compressor on with the switch at the compressor it allows you to check oil level, drain tank, and inspect belts. If the switch is on the outside of the closet you will tend to forget to do these inspections and if...

Thanks Milton I understand the purpose of the unloader I was just curious why some compressors have a line coming from what looks to be the crankcase of the pump that tees into the line from the tank check valve to the unloader.

On the back of many bigger air compressor pumps there is a small copper tube that comes off the back of the compressor that goes to the unloader. Some compressors have the line some do not. What is this line for? My old 5hp compressor pump had the line on it that tee into the tank check valve...

Well I am in luck I was able to get the proper size pulley to put my pump speed in a appropriate range. Thanks for the opinions.

I have purchased a replacement 5hp compressor pump. The maximum stated pump speed is 1050rpm. My 5hp motor has a pulley size of 9 3/4. According to the pump calculations the motor requires a 8 3/4 pulley. The difference is a 1" which is a difference of 120rpms. My question is should I try to...

Channellock makes about the best set of insulated and non insulated crimper pliers/ cutters that I have used.

I specifically ordered a 1 phase controller so we will see what it looks like but I will make sure I inspect the diagram.

Well thank you for all the help full info. I ordered a 5hp 1 phase magnetic motor starter last night should be here next week. I will be using the existing pressure switch to control the starter coil. Going tomorrow to purchase the new compressor pump. More questions might come up while I am...

Here is the id tag off the motor. I apologize its upside down. I guess what I am wondering is Should I get another pressure switch that is rated for 1phase 220 5hp motor and use a manual control, or buy a mag motor starter and wire the pressure switch to the power side of mag starter coil?

Well it is starting to make sense now. The starter is a manual starter. The motor is thermally protected, and the pressure switch used is a square 9013 model. This explains why a manual controller was used. The pressure switch label states that for 230v it will operate a 1 phase 3hp or a 2-3...

First day member and first question but have noticed some very electrical wise members. I brought home a 80gal upright compressor from work about 5yrs ago and just now getting it hooked up. The compressor pump was beat and non rebuildable so it went to scrap. The 1 phase 5hp motor is fairly new...