I have recently purchases an 120 Vac to 12 Vac transformer similar in design to the one shown here. I am curious as to the best way to wire this up. I am not a big fan of making a suicide cable for the obvious reasons of electrocution. If I pick up a set of these, would it be safe to splice and solder a 120Vac power cable into the connector?

  • \$\begingroup\$ Why not just use butt connectors? \$\endgroup\$ – Ignacio Vazquez-Abrams Feb 15 '14 at 23:40
  • \$\begingroup\$ I want the mains line the be detachable from the transformer. \$\endgroup\$ – Blackninja543 Feb 15 '14 at 23:50
  • \$\begingroup\$ Then get a proper AC jack and wire that on. \$\endgroup\$ – Ignacio Vazquez-Abrams Feb 15 '14 at 23:55
  • \$\begingroup\$ Then what does that look like. \$\endgroup\$ – Blackninja543 Feb 16 '14 at 0:04
  • \$\begingroup\$ They usually look like this. \$\endgroup\$ – Ignacio Vazquez-Abrams Feb 16 '14 at 0:06

What you're looking for is some kind of IEC Power Entry component. Digi-Key and other distributors have tons, with or without fuses, and with and without protective earthing. Personally, I like using the ATX power supply style IEC C-14 connectors, because I have tons of those cables laying around. This one also has a built-in fuse holder (remember to also get fuses!) http://www.digikey.com/product-detail/en/723W-X2%2F03/Q205-ND/245546

  • \$\begingroup\$ Exactly. If it's just one off, find an old pc, take out the power supply and gut it. Gives you the connector and a proper enclosure for the transformer. \$\endgroup\$ – Passerby Feb 16 '14 at 2:16
  • \$\begingroup\$ So I have built my 'special' cable. The thing scares the hell out of my personally. The real problem I have with the setup is the fact that I made it. Anyway I do intend to go with a C-14 style connector as I am planning on building a variable voltage ~5 Amp bench top power supply. My homemade cable would not be safe to run that high of a current through. \$\endgroup\$ – Blackninja543 Feb 16 '14 at 4:01

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