CONTROL FREQ
Member
- Location
- OHIO
First time asking, be easy on me... So I was working my normal routine at the plant, got a call from the boss to come to our new building. Apparently the painters kept tripping breakers...
1) 3 paint pumps---3 dedicated cicuits.
2) nameplate voltage 115, FLA 15.5
3) 20 amp breakers, #12 THHN everything wired correctly
4) pumps ran fine pumping water (paint material was obviously too thick) BUT
5) HERES THE KICKER! when the pumps were plugged directly into the receptacles, there was an instantaneous trip (like a dead short)... BUT when plugged into a 100 foot extension cord they all started up fine and ran pulling ~6.5 A... I've been scratching my head and talking to myself ever since.
Using an AC line splitter I did see an initial spike around 60 Amps for a split seconds when plugged in directly, AND through the extension cord. But one way tripped the other way did not. PS the painters told me that when the pumps were plugged into the extension cords and running, they seemed to be at lower RPMs and pressure than normal.
JUST WHEN YOU THINK YOU KNOW IT ALL... something like this happens.
ANY THOUGHTS? They would be much appreciated.
1) 3 paint pumps---3 dedicated cicuits.
2) nameplate voltage 115, FLA 15.5
3) 20 amp breakers, #12 THHN everything wired correctly
4) pumps ran fine pumping water (paint material was obviously too thick) BUT
5) HERES THE KICKER! when the pumps were plugged directly into the receptacles, there was an instantaneous trip (like a dead short)... BUT when plugged into a 100 foot extension cord they all started up fine and ran pulling ~6.5 A... I've been scratching my head and talking to myself ever since.
Using an AC line splitter I did see an initial spike around 60 Amps for a split seconds when plugged in directly, AND through the extension cord. But one way tripped the other way did not. PS the painters told me that when the pumps were plugged into the extension cords and running, they seemed to be at lower RPMs and pressure than normal.
JUST WHEN YOU THINK YOU KNOW IT ALL... something like this happens.
ANY THOUGHTS? They would be much appreciated.