I've got a shop that I wired up more than half a year ago. It's got around 100' of #4 wire running to the sub panel from the main. I've been using outlets there without issue that I noticed any number of times, but recently I was running a heavier-duty Skil saw and noted that it spooled up slower than normal. I checked all outlets in the shop and it was the same. I plugged it into my old garage circuit and it ran as it should. Nothing else is being run in the shop when I noticed this. Other equipment like my Stihl leaf blower I compared in both circuits and sure enough, it ran slower on my shop circuit too.
I checked connections at the main and sub breaker panels and everything is tight & clean.
A few weeks ago I was running my 220v stick welder on the shop circuit and I didn't notice any difference at all from it welding on my garage circuit.
I checked the amp draw with my clamp-on amp meter on my garage circuit with the saw and it pulled about 19 amp startup and settled around 9-10amp when running. I did the same in the shop expecting a big difference, but it measured about 17 amp startup and 8 amp running. I checked the current draw on my 5hp Quincy air compressor and it ran steady at 18 amp. That compressor seems to be running sluggish also, but I can't easily check it on another circuit because it's hard wired to the panel.
So, I've got a problem, but I'm not sure how to dig down further. All tips pointing me in the right direction will be much appreciated.
I checked connections at the main and sub breaker panels and everything is tight & clean.
A few weeks ago I was running my 220v stick welder on the shop circuit and I didn't notice any difference at all from it welding on my garage circuit.
I checked the amp draw with my clamp-on amp meter on my garage circuit with the saw and it pulled about 19 amp startup and settled around 9-10amp when running. I did the same in the shop expecting a big difference, but it measured about 17 amp startup and 8 amp running. I checked the current draw on my 5hp Quincy air compressor and it ran steady at 18 amp. That compressor seems to be running sluggish also, but I can't easily check it on another circuit because it's hard wired to the panel.
So, I've got a problem, but I'm not sure how to dig down further. All tips pointing me in the right direction will be much appreciated.