Hi everyone, was wondering if some of the people with home electrical knowledge could give me some insight. I'm having a new water heater put in which needs to be plugged in (old one had special power supply). This water heater needs to be plugged in but there is no electrical outlet close enough so my options are 1) Replace light bulb fixture near by with a 3 prong light bulb socket adapter and plug it into there 2) Use an extension cord Can anyone speak to either of these 2 options and the safety concern. With using the light socket for electricity I'm wondering if the water heater uses a lot of electricity which this light socket can't handle. With the extension cord i'm concerned with electrical problems should there be a water leak. Really confused on this one and would really appreciate some help.

The temp control on my oven is shot, and they don't make the replacement part, so I'm rewiring through a PID controller and contactor. That part, I know how to do. Question is, what wire to use? I only need to run it 2-3 feet to the controller just outside the oven. Oven is rated at 4.3kW @ 220V, that's 19.5A. That checks out because the switch in the oven is rated for 20. The wire in the oven is 16gauge 105C rated except the incoming lines which are 14gauge. 16gauge wire is rated for 22A in chassis wiring, so that checks out too. I bought some. The I looked at what I bought and suddenly had second thoughts. This is because it is aluminum, and because it has two temperature ratings on it. It says: "AWM 1569 105C or 1007 80C" I am sensitive to the temp rating because it is a wall mounted oven where the controls stock controls I need to wire to are in a compartment just above the oven. Outside the insulated area, obviously, but still pretty warm in there. I can't find any reference for Amperage ratings of aluminum wire. Can someone explain the dual temp rating and whether the aluminum means I need to upsize? Thanks.