Question about Serial #'s on units

[Anonymous user]

This may be a stupid question, but what does it mean when the serial number ( maybe) starts with a PQ or an ED? Is this the serial number on and does this designate something in particular? Thanks in advance.

[BillP]

P is for Philippines I believe and then Q means it was refurbished or re-worked in some way.

[Anonymous user]

This may be a stupid question, but what does it mean when the serial number ( maybe) starts with a PQ or an ED? Is this the serial number on and does this designate something in particular? Thanks in advance.

[BillP · Accepted solution]

the first letter is the place where the device was manufactured and the section letter denotes what product family/line the product is from. for example, ED means it was made in east providence, rhode island, USA (E for East Providence) and D, it is a single phase symmetra product.