Grounding Procedure:
The supplies:
- 14/3 cable (I purchased 10 ft)
- I chose this gauge because my required current for the heater is power/voltage = 1000 W/120 V = 8.333 A and according to this chart (http://www.amplepower.com/primer/gauge/) 14 gauge seemed reasonable
- Grounding plug with clamp
- Metal 4x4 outlet box
- Soldering iron and electric solder
- Optional: aluminum foil tape to cover solder points on metal objects
1. Attach the plug to the cable:
I stripped the cable and screwed each wire into its respective spot on the plug.
The finished plug, with a clamp to hold the cable in place.
I also tested it with a digital multimeter to make sure that none of the wires inside were touching and each wire on the other end of the cable led to the correct prong.
2. Attach the other end of the cable to the heater and junction box:
- Neutral wire soldered to neutral wire coming from heater and electric taped
- Hot wire connected to heater through relay (heater end on 1 and plug end on 2)
- Ground wire screwed into junction box
*I checked the connection between the ground prong on the plug and the metal box with a DMM.
3. Connect kettle and heater via ground wire to outlet box:
- Solder wire to top metal section of heater and cover with foil tape
- Solder another wire to the pot and cover with foil tape
- This tape is supposed to hold at up to 200 F, so we will see how it fares on the pot during the boil stage
- Solder the two wires (green coming from heater and white coming from pot) together and screw into junction box
*I also checked the connection between the ground prong and both the heater and pot
Last, here is a picture of the new junction box for the arduino and breadboard:
I am really excited to test this out on my next batch!
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