Control Panel (Part 2)

Parts and tools

To purchase pre-assembled or all the parts in kit form, see our products page.

 The following parts are needed: 

• (Qty: 2) Terminal strip, 8 position, 20 amp 
• (Qty: 3) 30A/240V DPDT or DPST relay with 110-120V AC coil  
• (Qty: 2) Doorbell transformer (110-120VAC input, 8-24VAC output, any wattage)
• (Qty: 2) Adjustable DC power supply (4-30V AC/DC input, 1.5-27V DC output) 
• (Qty: 1) In-line fuse holder for 6.3x32mm fuses, rated to at least 7A/125V
• (Qty: 1) 7A/250V fast blow fuse, glass tube 6.3x32mm 
• (Qty: 16) 3/16 x 3/4" stove bolt and nut  
• (Qty: 4) 1/8 x 1/2" stove bolt and nut  
• (Qty: 4) Small flat rubber washer (1/2" diameter)
• (8 feet) Black 10 gauge type T90/THWN/THHN wire, stranded
• (4 feet) Red 10 gauge type T90/THWN/THHN wire, stranded 
• (11 feet) Green 10 gauge type T90/THWN/THHN wire, stranded 
• (35 feet) Black 14 gauge type T90/THWN/THHN wire, stranded 
• (6 feet) Red 14 gauge type T90/THWN/THHN wire, stranded 
• (21 feet) White 14 gauge type T90/THWN/THHN wire, stranded
• (60 feet) 22-24 gauge telephone station or similar low voltage signal wire (rated to 300V)
• (Qty: 25) 22-18 gauge #6 narrow spade terminal (red) 
• (Qty: 140) 16-14 gauge #6 narrow spade terminal (blue) 
• (Qty: 26) 12-10 gauge ring terminal, #10 hole (yellow) 
• (2 feet) 1/2" Spiral wire wrap 
• (Qty: 50) Self-adhesive tie mount 
• (Qty: 100) Small nylon cable tie

 Source of power and power cord:

• (Qty: 1) NEMA 14-30R (125/250VAC, 30A) 4 wire dryer receptacle outlet
• (Qty: 1) 1-gang outlet box
• (?? feet) 10/3 wire with ground (enough to go from breaker panel to dryer outlet) 
• (Qty: 1) 30A double-pole GFCI breaker and 4-wire dryer cord
  - or -
  (Qty: 1) 30A double-pole breaker and 30A/240V cord with built-in GFCI 
• (Qty: 1) NEMA L14-30 (125/250VAC, 30A) twist lock electrical female connector

You'll also have to supply the following tools:

• Wire cutter/stripper
• Double ratcheting wire crimper
• 30-40W soldering iron or soldering station
• Rosin core solder (63% tin, 37% lead)
• Hand drill
• Drill press
• 3/16" high speed metal drill bit
• Cutting fluid
• Metal file  
• Screwdrivers
• Sharpie permanent marker

Some sellers do not ship outside the USA. If you live outside the USA (like us), we recommend using a forwarding service such as Shipito. We've used them to ship to Canada. The good news is that shipping within the USA is very inexpensive or often free. You then simply pay a small forwarded fee plus the cost of whatever shipping method you choose (USPS, FedEx, etc). They will even consolidate multiple packages into one to save on shipping. We recommend USPS whenever possible to minimize brokerage fees.