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How can you ground an ungrounded electrical outlet to a cold water pipe?
It is true that a cold water pipe will work as a ground but it should not be trusted. If the wiring in a house is older then the introduction of electrical grounding I would have to recommend the instillation of new grounded wiring. Grounding using the plumbing system, past where the cold water pipe enters the house, can present a hazard to plumbers. They can receive electrical shock if they remove a piece of pipe that was part of the groundings pathway. Also, as plumbing codes change they do not take into account electrical need. In many areas of the united states plumbers are using non-metallic piping and fitting. If this is added to your system you will lose your grounding.
What size copper bonding jumper is required by NEC - OR 2011 to bond the gas pipe to a 120v 20A circuit?
I don't know what the NEC - OR 2011 is. Is that a code book for the state of Oregon? The NEC does not allow using a gas pipe as a grounding electrode. You run the risk of heating the gas to explosive temperatures.
Bends are made in PVC conduit using a tool known as a?
Bends are made in PVC conduit using a tool known as a heat gun or a heat blanket. If you want to make make accurate and aesthetically pleasing bends without distorting the pipe, the PVC conduit must be heated thoroughly - inside and out. This is achieved using a "heater box," or a "heater blanket." Greenlee tools makes both, specifically for working with PVC conduit. Also available are plugs for plugging the ends of the PVC lengths to be bent, for keeping heat trapped inside the pipe and speeding up the heating process.
What tools does a construction electrician use?
Construction electricians use a wide variety of tools during their career. Hand tools: wire strippers, side cutters, screwdrivers, Allen wrenches, tape measure, protractor, needle nose pliers, cable cutters, hammer, handbenders, etc. . . Power tools: drills, portabandsaws, pipe threader, pipe benders Testers: Voltmeter, ammeter, ohm meter, multimeter, megger, ground tester
What is pipe earthing?
in this method a galvonise iron pipe of 38mm internal dia 2.5 mt lenght having 12mm dia holes on its surface
