I got a call from a shop owner who is purchasing a piece of cnc equipment. They currently have 3 of these types of machines in place. Each is fed from a dedicated 120/240v Delta 3phase 50 amp breaker. The machine specs call for the 50A feed. These machines can be equipped with a parts conveyor, auto loader and turnings conveyor.The current set up uses non of the optional features.
A load check shows between 6 and 14.5A depending on the machining cycle. The panel feeding the existing equipment is full physically but only pulls 96A max with the total shop running all equip, lighting,etc.
The mfgr install states a 50A 3 phase 240v supply.
The closest panel in the shop that is not full is approx 180' away in a back storage area.
Does anyone see a problem with feeding the 4th machine off the same drop as the 3rd one that is currently operating? Savings to owner is almost $2K if existing drop can be utilized.
A load check shows between 6 and 14.5A depending on the machining cycle. The panel feeding the existing equipment is full physically but only pulls 96A max with the total shop running all equip, lighting,etc.
The mfgr install states a 50A 3 phase 240v supply.
The closest panel in the shop that is not full is approx 180' away in a back storage area.
Does anyone see a problem with feeding the 4th machine off the same drop as the 3rd one that is currently operating? Savings to owner is almost $2K if existing drop can be utilized.