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I know this is absolutely unrelated to audio but I can't find the answer anywhere online and you guys are the only people I know who know about electronics How do I test a V outlet? I have a circuit in my house and I want to know if it's live or if the appliance I'm plugging into is is dead. It's one or the other - and I suspect I can't just stick a regular V outlet tester in there - since i understand v circuits carry multiple voltages HappyTom Member Sweden Posts: Tormented Tortyr. But I lack the understanding of what the three wires carry.
I can see that none of them carries ground because there's a 4th ground wire that's not connected to anything. Typically V outlets are three-wire, with either hot side V w. In North America they resemble three-prong V outlets except one of the blades is at a 90 degree angle relative to the other. If you have a four-conductor outlet odd for a home installation it may be three-phase.
Check at the breaker box to see if you really have three phase coming in. There are some current and former electricians in here who can tell you what to look for. Oh I see - so one of these has to be a ground wire - they just wired it using one of the 3 as ground and left the ground wire dangling. The colors that are connected are black, white, and red. My multimeter is a super-generic one that I've only really used to check continuity: Can anyone recommend a beginner's mm that's not too expensive, that would be useful for someone whose longterm projects include just building a couple of compressors, preamps - and general household use?
Butterylicious Member Austin Posts: Think of it as the secondary of a center tapped transformer with the center tap grounded, because that's exactly what it is.
Checking voltage at an outlet
The round or "L" shaped hole is ground. The 2 straight blades are hot and should read a potential of volts to ground.
They should have a potential of volts hot to hot.Wiring residential homes with volts is a necessity, for powering some heating and cooling equipment as well as some large appliances. The volt circuits as they were known prior to the s are now commonly known as volt circuits and volt circuits are now volt circuits. The volts feeding the main electric panel runs on two different wires each carrying volts with respect to a third wire called the neutral and common to both.
Each volt line runs degrees out of phase with the other. With the neutral as common to both, if a multimeter was used to measure across the neutral line and any one of the two colored power hot lines, the reading would be volts.
If it was measured across the two power hot lines, it would be at volts. This allows half the amount of amperage to power a Watts heater, for instance, as opposed to running a Watts portable heater plugged into a volts outlet since the current used in amps is calculated by dividing the Wattage in each case by the voltage which is in the first and in the second case.
If the appliance is a stove and requires volts to operate a clock, certain controls, and control board along with volts to run the elements, a three-wire cable will be needed to hook it up with two hot wires and a neutral which will provide the volts across either one of the hotline.
On the other hand, if a hot water heater is being hooked-up, a two-wire cable with two hotlines will be required, without a neutral wire. A lot of high wattage appliances, however, will require volts hookup to operate at a lower power consumption rate.You must connect to microsoft exchange with the current profile before you can synchronize
Any volts circuit will be protected through a two-pole breaker, which is essentially two breakers positioned side-by-side in a larger casing with the arms of both mechanically tied together so that if one is tripped, both sides of the line go off.
Written by Hannah Madans. To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. Charles Ouellet. Related Posts Hot Tub v to v. Read More. Need help with AC voltage stabilizer. Hi, I am from India and I have a very old 1.Testing Volt Electrical Circuit Wiring: On a volt circuit I am getting between green and black and green and the red wire, is this correct?
I am currently getting between green and black and green and red wire. Is my wiring correct?
Understanding 220 and 230 Volt Wiring
Is my wiring damaged or crossed? Application: Testing Electrical Circuit Wiring. Estimated Time: Depends on personal level experience, ability to work with hand tools and electrical troubleshooting skills.
Precaution: Identify the circuit, turn it OFF and then Tag it with a Note before performing any wiring or inspections. Important: Testing volt circuit wiring is best performed by a qualified electrical contractor. When testing a volt circuit it is normal to get a volt reading from one power leg to the ground wire or to the neutral. As for any other situations about your swimming pool electrical equipment it is best for you to call a licensed electrician. Using Electrical Testers.
When working on home electrical wiring using voltage testers can play an important part in electrical safety. Electrical testers enable you to identify electrical circuits and help prevent the possibility of accidental electrical shock. Types of Electrical Testers. I found a volt electrical wire hanging from rafters underneath my deck.Npc tracker 5e
This wire was used to service a hot tub which was removed before I bought the house. Whoever disconnected the hot tub left the three coated wires and the aluminum ground cable exposed.
What testing method or device can I use short of having to call an electrician to see if the wire is hot. Hi Jim, A voltage tester is commonly used by an electrician to test a volt circuit as described above in this question. You may also see more information in the section about electrical testers as provided above as well.First Name. Display name. Lost your password?
Please enter your email address. You will receive a link and will create a new password via email. Checking voltage at an outlet is very easy however you want to use the right tester and a good at that. So use this type with caution. Non-Contact testers can even beep if you move it too fast against your own skin. Two Range Tester. These are good and again for a quick reading. If you only have volts only half will light up indicating just volts.
But if you have volts both ends light up.
Testing 220 Volts
Multi -Meter s These is by far the best way to test for power and can be used for many other projects. The question is, do you need one. Here is a decent multimeter and easy on the pocket.
Checking voltage at an outlet Checking voltage at an outlet is very easy however you want to use the right tester and a good at that. Digital is mainly what you'll be using. I would turn the breaker off and then back on again.
I would also check for power at the breaker by removing the panel cover. Hi Dom, Thanks for all of your help. Any help would be greatly appreciated. You must login or register to add a new comment. Previous post. Next post. Register Now. Remember Me. Lost Password Lost your password?
Add question You must login to ask question.Last Updated: July 21, References. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. There are 24 references cited in this article, which can be found at the bottom of the page. This article has been viewedtimes. Learn more While most outlets transfer volts, larger appliances like dryers, stoves, and air conditioners require more power and use a volt outlet.
Wiring a new outlet is a project that someone who has experience working with electricity can do safely by working carefully and following the proper precautions. Tip: If you need to run the cable through your wall horizontally, then you may need to drill holes through wall studs so you can fit the wire through it. Tip: The ground wire inside the cable may be uninsulated rather than green.
Put the uninsulated wire on the grounding screw instead. Variation: If there are 2 bars on the walls of your circuit breaker box, one of them will be for neutral wires and the other will be for ground wires.
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You can also list all of your topic models. Specifies a list of terms to ignore when performing term analysis. This can be used to change the names of the fields in the topic model with respect to the original names in the dataset or to tell BigML that certain fields should be preferred.
All text fields in the dataset Specifies the fields to be considered to create the topic model. If multiple fields are given, the text field values for each row will be concatenated so that each row is still considered to be one document.
If it is unset, it will be chosen automatically based on the number documents (i. The minimum value is 2 and maximum value is 64. Example: "MySample" tags optional Array of Strings A list of strings that help classify and index your topic model.
Computation is linear with respect to this parameter. The minimum value is 128 and maximum value is 16384. The minimum value is 1 and maximum value is 128. Example: true You can also use curl to customize a new topic model. Once a topic model has been successfully created it will have the following properties. Topic Model Status Creating a topic model is a process that can take just a few seconds or a few days depending on the size of the dataset used as input and on the workload of BigML's systems.
The topic model goes through a number of states until its fully completed. Through the status field in the topic model you can determine when the topic model has been fully processed and ready to be used to create predictions.
Thus when retrieving a topicmodel, it's possible to specify that only a subset of fields be retrieved, by using any combination of the following parameters in the query string (unrecognized parameters are ignored): Fields Filter Parameters Parameter TypeDescription fields optional Comma-separated list A comma-separated list of field IDs to retrieve.
To update a topic model, you need to PUT an object containing the fields that you want to update to the topic model' s base URL. Once you delete a topic model, it is permanently deleted. If you try to delete a topic model a second time, or a topic model that does not exist, you will receive a "404 not found" response. However, if you try to delete a topic model that is being used at the moment, then BigML.
To list all the topic models, you can use the topicmodel base URL. By default, only the 20 most recent topic models will be returned. You can get your list of topic models directly in your browser using your own username and API key with the following links.
You can also paginate, filter, and order your topic models. Time Series Last Updated: Friday, 2017-10-27 12:23 A time series model is a supervised learning method to forecast the future values of a field based on its previously observed values.
It is used to analyze time based data when historical patterns can explain the future behavior such as stock prices, sales forecasting, website traffic, production and inventory analysis, weather forecasting, etc. A time series model needs to be trained with time series data, i. BigML implements exponential smoothing to train time series models.
Time series data is modeled as a level component and it can optionally include a trend (damped or not damped) and a seasonality components as explained below:Forecast equation Level equation Forecast equation Level equation Trend equation Forecast equation Level equation Damped trend equation Forecast equation Level equation Trend equation Seasonality equation The different components can have variations, e.
As a result of combining the different variations for each component, several models can be trained for a given objective field. Note that BigML excludes certain combinations for numerical stability reasons such as additive errors with multiplicative trends or multiplicative error and trend with additive seasonality.
BigML computes four different performance measures to select the best model for a given objective field. You can create a time series model selecting one or several fields from your dataset to use as objective fields to forecast their future values.
You can also list all of your time series.
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