mark32
Senior Member
- Location
- Currently in NJ
Hello all,
A friend that does maintenance for a small factory has been tasked to power up a new piece of equipment. The specs for this equipment is written as follows: 3/n/pe, 460v 60hz - rated current = 20a max. This equipment is coming from a sister company that also uses the very same machine (Some kind of fancy heater that fuses conveyor belts together). Their maintenance guy sent my guy a pic of the transformer they use, specs here are: 30kva, Primary 240 Delta, Secondary 480y/277. At their main panel, there's a 250v plate on the Square D I line, and I was told they have 240v coming in from the poco. But I get 210v from phase to phase and 120v from ground to all the phases. So here are my questions, what type of service is this? Is this suppose to be a 240v service or is it a 120/208 service? Furthermore, would the transformer I mentioned be correct for this service? I did commercial work for a few years, but I mainly ran pipe and pulled conductors, I never had the opportunity to wire a transformer, but I'm looking forward to it. Any help is appreciated.
A friend that does maintenance for a small factory has been tasked to power up a new piece of equipment. The specs for this equipment is written as follows: 3/n/pe, 460v 60hz - rated current = 20a max. This equipment is coming from a sister company that also uses the very same machine (Some kind of fancy heater that fuses conveyor belts together). Their maintenance guy sent my guy a pic of the transformer they use, specs here are: 30kva, Primary 240 Delta, Secondary 480y/277. At their main panel, there's a 250v plate on the Square D I line, and I was told they have 240v coming in from the poco. But I get 210v from phase to phase and 120v from ground to all the phases. So here are my questions, what type of service is this? Is this suppose to be a 240v service or is it a 120/208 service? Furthermore, would the transformer I mentioned be correct for this service? I did commercial work for a few years, but I mainly ran pipe and pulled conductors, I never had the opportunity to wire a transformer, but I'm looking forward to it. Any help is appreciated.