As winter is just upon us here in Regina, Saskatchewan, it is time to start plugging in the block heater to my car. Given the watts of the block heater and cost of electricity, if the block heater was plugged in every night for about 10 hours, it will cost about $18 Canadian per month. I want to put the block heater on a timer for 2 hours before leaving, which will reduce the cost significantly.
My proposed solution is to put a GFCI receptacle in the house, before the exterior receptacle, but only connect one of the exterior outlets to the GFCI. Then, I would connect a male end of an extension cord to one outlet of the exterior receptacle, so I can plug it into the interior GFCI - all of this wiring, of course, would be done in a metal box.
Now with a receptacle in the house, I would put a Wi-Fi plug that I already own into said receptacle, and then plug the extension cord I just created into the Wi-Fi plug. This plug will give added benefits of being able to control the outlet remotely (also from bed) and also see the watts/amps being drawn, so I know that it is actually plugged in and working. However, since this Wi-Fi switch is not rated for outdoors, it must be inside.
With my limited electrical knowledge, I have come up with a potential solution and was hoping you could provide feedback.
I have attached the current wiring and proposed wiring.
Here are a few other solutions I had considered and the reasons why I chose not to proceed with them:
- Use an outdoor timer (some even with Wi-Fi - Woods makes one) I already have the Wi-Fi switch make/model that I like to use; with an outdoor timer, I can't control it remotely; even the outdoor Wi-Fi switches on the market won't show me watts/amps being drawn.
- Instead of an Internal GFCI, why not a two-pole GFCI breaker - they are about $200 Canadian; I am not willing to spend that much.