Oracle Tutoring, Campbell River, BC
(250) 203-6544 (text) or (250) 830-0295 (talk)
Self-tutoring about electricity: the tutor mentions a video he found about how 240V is (or can be) actually wired. It’s not too hard to imagine how 240V is produced, but one might wonder exactly how it’s done from a panel. …
Self-tutoring about working with corded tools: the tutor looks into how the extension cord’s gauge might affect performance. Roughly speaking, 12 gauge wire has 1.6 times the resistance of 10 gauge. That’s not too surprising, since lower gauge means bigger …
Electricity: wire gauge of extension cords: power difference Read more »
Self-tutoring about household wiring: the tutor begins about the gauge of some. One typical type of household wiring cable for indoor, 15-amp circuits in dry areas is NM 14-gauge. It’s white sheathed cable; inside are hot, neutral, and ground, each …
Electricity: what gauge of wire is common in household wiring? Read more »
Self-tutoring about electricity and household wiring: the tutor looks into the idea of polarized plugs. As I understand it, a polarized plug has one prong bigger than the other; a polarized outlet has the left slot bigger than the right. …
Self-tutoring about electrical terminology: the tutor mentions the difference between “grounded” and “grounding”. As I understand, grounded refers to the return line of a circuit. When the circuit is being used, current will flow through the grounded wire, but it’s …
Self-tutoring about “backstabbing”: the tutor relates its meaning in household wiring. Some electrical outlets have holes in the back that can receive incoming wires from the household wiring system. Such a hole contains a clamp that holds the wire once …
Self-tutoring about electricity generation: the tutor describes the rate of 1MW: 1MegaWatt. Electricity consumption is typically measured in kWh (kiloWattxhours). A Watt is a rate of energy use: 1J/s. A kiloWatt is 1000J/s. In BC the average household consumption, per …
Self-tutoring about electricity and energy: the tutor mentions some units new to him. At an electricity generation plant, MWt means “megawatts thermal.” It measures the energy input. MWe means “megawatts electrical.” It’s the output. When burning fossil fuel such as …
Energy: electricity generation units: MWe vs MWt Read more »
Self-tutoring about electrical consumption: the tutor looks for the typical power rating of baseboard heaters. Investigating energy consumption, I was compelled to inquire about the wattage of baseboard heaters. Baseboard heaters, because of their variable length, are often discussed in …
Self-tutoring about wiring: the tutor inquires about where 208V supply might be found. Looking at the baseboard heaters the other day, I noticed they have two wattage ratings: one if in a 208V system, and one if in 240V. I …