Cable Calculator Software Free !LINK! Download

Residential

Designed to be used by homeowners and provides an increased safety factor. Limited to single phase circuits with maximum cable temperature of 60&degC for circuits under 100 Amps and does not allow parallels. Also limits installation types to cable, non-ferrous conduits (PVC for example), or direct burial.

1. Choose your supply type (Single phase 230V / Three Phase 400V)

2. Choose your required voltage drop

3. Input the power in watts or current in amperes which you require your cable to carry

4. Input the length of your cable run

5. Choose the method of installation how the cable is going to be installed

6. Press calculate and your cable sizes will be calculated.

Cable Calculator Software Free Download

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Our calculator now lists different cable types, so by scrolling down the list you are able to see how different cable types may have different sizes for the same set of parameters.

Choose a cable which is suitable for your installation.

The recommended cable sizes are based upon information provided by the user and are intended as a guide only. The calculation is derived from BS7671 Requirements for Electrical Installation, IEE Wiring Regulations, and is based on the voltage drop selected at 230 and 400 volts. In order for us to provide this information as a guide certain assumptions will have been made

The current carrying capacity tables for flexible cords in BS7671 do not include options for different installation methods, results have been included for flexible cords for the whole range of installation methods. It remains the responsibility of the user to ascertain where flexible cords are suitable.

We have combined flexible cords into one result for the use of our calculator (to make it more user friendly) please refer to BS7671 for individual tables and any relevant correction factors etc

Insulation: Select the insulation for the cables. For multi-core cables, this applies to the live, neutral and earth conductors. For single-core cables, this applies to the live and neutral conductors. The earth-cable select is selected under Earth Cable Insulation.

This option enables you to use parallel cables in high-current installations, where more than one multi-core cable or more than one single-core cable group is required. This means more than one live core per phase.

For single-core applications. The whole cable group is counted as one. A cable group includes three phase cables, the neutral cable, and the earth cable. It can be installed in a flat or trefoil formation.

Number of cables, cable groups, or enclosures: This is required when multiple cables are installed close to each other, where the heat radiated from adjacent cables affects the current rating. It includes parallel multi-core cables and parallel single-core cable groups. For parallel multi-core cables, each cable is considered in the derating. For parallel single-core cable groups, each cable group is considered in the derating -not the individual cables for each phase or the neutral.

Space between cables, cable groups or enclosures: Select the spacing between multi-core cables, single-core cable groups or enclosures (underground multi- and single-core). The table below shows the spacing that can be selected for different installations and cable types.

Check loop impedance: Select to check the earth loop impedance of the circuit. In other words, to check if the specified protection device will trip for an earth fault when the specified cable is used.

The fault constant, K, is based on the insulation material, the initial conductor temperature, and the final conductor temperature. The calculator uses the maximum allowable operating temperature as the initial conductor temperature. For example, 75C is used for PVC insulated cables, 90C is used for XLPE insulated cables, and 110C is for XLPE 110C.

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This is a calculator for the estimation of the voltage drop of an electrical circuit. The "NEC data" tab calculates based on the resistance and reactance data from the National Electrical Code (NEC). The "Estimated resistance" tab calculates based on the resistance data estimated from the wire size. Click the "Other" tab to use customized resistance or impedance data, such as data from other standards or wire manufacturers.

Still another critical factor in voltage drop is wire length. Shorter wires will have less voltage drop than longer wires for the same wire size. Voltage drop becomes important when the length of a run of wire or cable becomes very long. Usually this is not a problem in circuits within a house, but may become an issue when running wire to an outbuilding, well pump, etc.

Cables are often used in bundles, and when they are brought together, the total heat which they generate has an effect on ampacity and voltage drop. There are strict rules about bundling cables which must be followed for this reason.

Cable selection is guided by two main principles. First, the cable should be able to carry the current load imposed on it without overheating. It should be able to do this in the most extreme conditions of temperature it will encounter during its working life. Second, it should offer sufficiently sound earthing to (i) limit the voltage to which people are exposed to a safe level and (ii) allow the fault current to trip the fuse in a short time.

This app uses the calculation requirements found in the 2017 National Electrical Code to determine the ampacity of insulated conductors and certain cable-type wiring methods. This calculator also complies with the 2020 NEC requirements. Certain installations (such as cable trays and medium-voltage conductors) are not included in this app. Insulated single conductors are assumed to be installed in conduit or direct buried. All calculations assume a voltage of no more than 2000 volts and that the appropriate NEC requirements are followed by the installer, engineer or other responsible party. For more information on ampacity calculations, please consult our technical resources.

This app assumes installation in conduit or direct burial when individual insulated wire types are chosen. The app limits the final ampacity of the wire to the most conservative of: the corrected and adjusted ampacity; the equipment temperature limitation default values as described in NEC 110.14(C)(1); or the cable type temperature limitation.

Note: The calculator will permit choosing NM-B and UF-B up to 2 AWG. NM-B is permitted to be manufactured with conductors as large as 2 AWG, but multiconductor UF-B is limited to conductors no larger than 6 AWG by the UL standard.

I was able to make a fully functional programming cable to use for programming the ARM-based calculators (12C+, 15CLE, 10bii+, 20b/30b/wp34s). I made the 6-pin connector from scratch and used one of Harald Pott's USB converter boards (thank you Harald!). Furthermore I didn't need nor use HP's cable to mold, measure or even look at.The basic materials are:one of Harald's PCB's (is there a link to order them somewhere?)0.8mm x 16.55mm spring loaded pins 2mm pitch x 2 row machine pin sockets beryllium copper sheet 0.01" (.25mm) thick some thin, stranded 6-conductor wire (ribbon cable is good) some shrink wrap tubingHere's how to make it:raw materials for connector: Cut a connector to get a 5-pin (x 2-pin) block. Cut the copper sheet to get two pieces: 3mm x 18mm and 4mm x 18mm. Insert 6 pins in the middle of the connector and solder them into place: Make a small bend on the end of each piece of the copper that will serve as the hook to lock the connector in place. Solder the copper pieces in place as shown: Here are the rest of the materials to finish the cable. Harald's cable comes with the USB wire and connector already attached. You need to add some standard size tact switches (for erase and reset). Any electronics distributor will have zillions of them to choose from: Now comes the hard part, soldering the wires to the back of the connector and to the PCB: Here's the final cable with the board mounted in a little 1" x 2" Amac clear plastic box Edited to remove an unnecessary and confusing commentEdited: 25 Aug 2012, 12:12 a.m. after one or more responses were posted Re: Homemade ARM-based Calculator Programming Cable

Message #2 Posted by Namir on 24 Aug 2012, 11:12 p.m.,

in response to message #1 by Katie Wasserman

Paul,The main thing that I concluded was that I had to use a 2mm pitch socket for the pins or I would have zero chance of aligning them properly. Once I had the socket in hand it just seemed logical to use it as the backbone of the plug. The pins I used were the perfect diameter on both ends, but the connector would be a somewhat tighter fit if pins were shorter so that it wasn't so far away from the calculator. Did you find shorter pins to use? Re: Homemade ARM-based Calculator Programming Cable

Message #5 Posted by Paul Berger (Canada) on 25 Aug 2012, 1:23 p.m.,

in response to message #4 by Katie Wasserman

You can shorten the pins I have but only by a couple of millimeters. The internal spring runs most of the way through the sleeve and if you cut off too much it's toast. Soldering the pins into the socket keeps them pretty stable. It's just that the whole plug should be closer to the case so that it's easier to put the calculator down on a desk face up. Re: Homemade ARM-based Calculator Programming Cable

Message #7 Posted by Walter B on 25 Aug 2012, 1:14 a.m.,

in response to message #1 by Katie Wasserman

Great work, Katie! And very well documented :-)Now the inevitable dumb question applying to the WP 34S: Harald also offers a pcb with a USB port on it to be installed inside the HP-20b/-30b/WP 34s so you can use a standard micro USB cable for the computer link. Using this, the only additional thing required for programming would be your great 6-pin connector with pin J31 and J36 (reading J34 on the calculator board) shorted. This will replace the ERASE button. Kind of a programming dongle ;-) Correct? Re: Homemade ARM-based Calculator Programming Cable