for 120-to-240 Adapter Kit (Rev 1): (not yet complete)
("240-Stubby" uses a pigtail with a molded, in-line L6-20R rather than a wall-socket L6-20R.)
1. Project Box: a standard 2-wide? electrical enclosure/junction box, plastic.
Mayby 1-wide will be sufficient for "Stubby".
2. Receptacle: L6-20R, it should include mounting screws. For "Stubby", use an L6-20R "pigtail" instead.
3. Cover for box (#1) with circular cutout for the socket (#2). "Stubby" does not require the socket-mounting hole. It should include mounting screws.
4. 120v Connection Cords: Two short cords (very short for "Stubby"), or one short and one long, with a molded 5-15P connector, round cable, at least 12/3 wire, suitable for at least 16 amps. Stubby might "allow" 14/3 wire, since the stubs are only a few inches long. We will just use the male 5-15P ends for this project.
5. Relays: Two 120v AC coil, ... I will copy link and part number from other thread. About $6 to $10 each.
6. Spade Lugs: We need ten, four to connect to each of the two Relays, and two to connect the In-to-Out Grounds.
Note: Two different spade sizes (six 0.250 and four 0.125) are probably needed (check the selected Relays). Also, crimp-tubes sized for the wires being used: three bigger to crimp two incoming-size wires, 7 medium to crimp one I/O wire.
7. 240v Neon Indicator: With resistor, already in through-panel housing, with two wires attached. Just over $2 ($2.22).
http://www.newark.com/jsp/search/produc ... B100000001
8. Wire: Two 4-to-6-inch pieces of insulated, stranded wire (like the "input" wire. Then, (not needed for "Stubby"), two 6-inch pieces of insulated, solid, 12-gauge wire.
9. Through-wall cable clamps: Two (three for "Stubby") circular "waterproof" cable gasket/clamps, to fit the two Input (and one Output, for "Stubby") cords being used. About $3 each?
NOTE: No solder necessary, all connections are crimped with insulated connectors.