You could think of this as so much current flows through the resistances that all the voltage is dropped across those resistances so by the current reaches the chassis which the person is touching, there is no voltage difference between ground and the chassis with which to shock a human at ground potential or connected to ground. Is the voltage lost/consumed through resistive loads in the circuit, such as contactor coils? So if you short the hot line to ground, the hot line gets pulled down to ground instead of ground being pulled hot. Ground (or earth) is assumed to be an infinite charge sink. Wouldn't grounding the common, which it obviously doesn't, unless in the event of a short, cause unwanted voltage to continuously energize the chassis or just act as a short? If a person, presumed to be at ground, touched the chassis the current would go to ground through the human. If the chassis was not grounded and a hot wire got loose inside and made contact with the chassis, now the chassis would be hot. The chassis is grounded so that if a hot wire gets loose inside and makes contact with the chassis, the current will take the easier path to ground through the low resistance metal chassis instead of through the human, who is at ground or in contact with ground, touching the chassis. People are assumed to be at ground potential and/or connected to ground somehow by virtue of the inability to hover. Trending Questions When gravitational forces are compared with electrical forces you find that? How many galaxies in our observable universe? What are the four planets in the inner outer solar system? Is the sun required to produce a Earth day? What month can you see the milky way from Florida? Why is Saturn uninhabitable? How does the size of Mount Everest compare to the size of the earth? How many days does the Earth spin around the sun? How many humans can ride in the endeavor? How many light years are in 3.7 by 1.The intent of grounding the chassis isn't to help with troubleshooting. Product Details Wasserstein UL-Certified 24-Volt transformer and C-wire adapter offers a simple powering solution to your WiFi smart thermostats, from any standard 110-Volt/120-Volt electrical outlet, this provides the constant 24-Volt power required by today's top WiFi Smart Thermostats. Remember any transformer should be seen and not heard if all is Have to operate in the more complicated systems. Heat Pumps and dual fuel systems typically use =50va output So Use yourīasically this is what you will see in most home situations:Ĭentral heat only=20 VA rating 24 volt transformerĬentral heat with cooling = 40 VA rating 24 volt transformer Real sharp burned smell that stands out quiet strongly. Transformers usually really stink when they go down. Sometimes if your Amprobe will not pick up the small signal youĬan wrap a wire around the wire you are checking 10 times andĬonnect at ends and it will magnify your reading x10 so you can see They come to their nominal designed conditions. It hums alot then it has weakly wrapped windings which can causeīut please do remember most transformers get louder the closer Occurse is usually your culprit to your problem. Hotop 24 Volt Transformer, 16.5ft Long C Wire Adapter Thermostats Compatible with Most Versions of Ring Doorbell and Smart Thermostat, Nest Hello Skybell Eufy Wyze and Nest Ecobee Sensi Honeywell. Whatever part of the system that started drawing power when this Sometimes the transformer will hum when under heavy load. Manufacture can tell you what original equipment was designed for If itĭoes, check to see if your equipments literature or supplier & It should not go above the name plate rating. You can check the amperage output with a amproble if necessary on Not, then you either have a transformer that is to small from someĪddition to your system or wrong transformer replacement in past. Reading under full load on the output 24volt A.C. Make sure your transformer is showing its full voltage potential These small control transformers are typically rated in VA The above two are in no case all there are out there but the If you have a gas system I'm assuming 120 volt A.C. If you have a all electric system then chances are you have 230 24 volt control Transformers come in all kinds of sizes and
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