Reply by jgt1942

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Posted on Air Compressor Upgrade

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203 posts in 1915 days

#1 posted 07-17-2016 07:43 AM

CharelyL Much thanks for the feedback. I think I’m OK however please feel free to suggest otherwise. Following are more details.

The zip wire is 14 gauge zip line (formerly speaker wire) and is tie to the hot and neutral of the 240v normally open side of the compressor relay for the feed to the fan.

The motor in the fan is brushless, I had to take it apart to remove the original wire (16 gauge) to replace the original short zip line and did note that there were no bushes. When connecting in the fan the wire was tinted, twisted to the other wire and helt together with a wire cap. I took care to connect the neutral side to the fan neutral (the zip line has one side with a white stripe), the other end neutral connected to the compressor neutral. The fan did not have a ground connection this is why I just used the zip line. When I made the connections on the to the compressor relay I use wire spades which were then crimped to the wire from the fan. I used the spade because it made it easier to connect to the relay plus it is a neater connection. I install a male/female plug in the line just to make it easy to disconnect if needed. I used the 14 gauge zip line because it was MUCH easier to work with than normal house wiring. The fan is almost all plastic (housing and fan blade). The foam you see will not support a flame and the fan is a couple of inches away from the foam.

The compressor is powered via 10 gauge 4-conductor wire, e.g. two hot legs, one neutral and one ground which is connected to a 240v outlet. The wire running from the compressor to the outlet has stranded wires for all four lines. This was leftover wire from making some 50’ extension cords several years ago.

Tonight I was heavily using an air tool and the compressor kicked on several times. I was surprised as to how warm the air was in the area of the compressor. I did not measure the actual temp. I’ll run a test in a couple of days, too many things on the list to do the test tomorrow. The temp in the garage was 90+ degrees and the temp in the ceiling is about (+/- 1-2 degrees) the same since my insulation is up against the roof. I have an infrared temp gun and have confirmed this in the past. I did not think of getting the gun and measuring the temp when I was using the air tool.

-- JohnT

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