A standard 100-amp load center can be used as a subpanel, according to electrical-online.com. The neutral bonding jumper, however, must be removed. In a subpanel, the neutral must be completely isolated from the ground. When doing electrical work, the power should always be turned off.
For residential service, the neutral and ground can only be bonded in one location, which must be in the main panel. In most panels, a metal strap or machine screw connects the neutral bus bar to the panel case, or ground. This metal strap or screw must be removed. To make the sub-feed connection, an appropriate size and length cable is run between the main panel and the subpanel. For example, 6-3 NM-B wiring can carry 50 amps at a maximum length of 55 feet. At the main panel, the hot legs of the sub-feed wiring is connected to an appropriate branch circuit breaker, the neutral wire connects to the bus bar and bare grounds to the panel case. At the subpanel end, the hot legs of the sub-feed wiring are connected to an appropriate circuit breaker seated on the panel's hot bus bar. This acts as the subpanel's main breaker via reverse feeding. The bare wire is connected to a case ground lug in the subpanel, and the neutral wire is connected to the isolated neutral bar. Electrical work should always be inspected by a licensed professional.Learn More
A low voltage electrocardiogram result can be caused by a problem in the heart's ability to generate electricity or can be due to the presence of fluid or air in the chest between the electrodes and the heart. Chronic heart diseases, such as cardiomyopathy, can cause low voltage ECGs.Full Answer >
Dimmable CFL bulbs are energy-saving light bulbs that dim room lighting when used with an installed dimmer switch. These bulbs are estimated to conserve about 75 percent more electricity than traditional incandescent bulbs. In addition, CFL bulbs last 10 times longer than regular light bulbs while generating less heat.Full Answer >
Incandescent light bulbs shaped like torpedoes and that fit into candelabras include the type B variety of bulb. The variety of sizes in the bases of the bulb are designed to fit the various socket sizes in the candelabra. Whether you choose clear or frosted bulbs depends on the intensity of light that you want from your fixture.Full Answer >
Light switches come in several types, including single-pole, three-way switches, multilocation switches, double switches and dimmers. Various features can be combined with these types of switches, including timers, time-delay mechanisms and motion sensors. Some light switches are placed on the same panel as electrical outlets.Full Answer >