upgrade eta 1251 to 1251-4

[Michaelclaytonmoore]

does any one know how to upgrade an ETA1251 to 1251-4? I know it is possible but need info thanks

 

[microstar]

A Google search for ETA 1251 found the attached two PDF files. The schematic shows the availability of two power inputs, L1 and L2 which are jumped together in the 1251 and would be supplied separately in the 1251-4 version.
Does not address a second line fuse or what happens if you plug the L2 AC cord into an outlet with hot and neutral reversed.... would probably let a lot of smoke out. Definitely seek the advice of someone with electrical knowledge before attempting.

 

[Michaelclaytonmoore]

A Google search for ETA 1251 found the attached two PDF files. The schematic shows the availability of two power inputs, L1 and L2 which are jumped together in the 1251 and would be supplied separately in the 1251-4 version.
Does not address a second line fuse or what happens if you plug the L2 AC cord into an outlet with hot and neutral reversed.... would probably let a lot of smoke out. Definitely seek the advice of someone with electrical knowledge before attempting.

thank you