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# How do you compute voltage drop and cable size over distance?

# How can you limit voltage drop in a power cables?

To do this you effectively have to reduce the resistance of the cables. This normally would mean changing the cables for some made from a material of lower resistivity o…r larger cross sectional area or both. If you are restricted in the choice of cable you can run them in tandem to halve the resistance or use greater multiples still, providing that standard safety procedures are observed. If mains voltages are concerned the work must conform to part P of the building regulations.

# Low voltage cable size calculation formula?

sir please provided the all low voltage cable size and attached formulas

# How to calculate cable size with given kw distance?

To select the proper cable size you need to know all of the following: circuit ampacity needed ambient temperature length of circuit from point 1 to point 300 number of …conductors in the raceway or cable type of insulation being used voltage: whether above or below 380 volts and for some pieces of equipment, the manufacturer's instructions.

# What voltage drop for 12V on 100' of number 10 cable?

Answer It depends on the current load. If you're only pulling low amperage, the voltage drop will be minimal. If you're attempting to pull anywhere near 20 amps,… the voltage drop will be considerable. It also depends on the type and quality of the wire.

# What is the voltage drop of a 240V 40 aluminum cable at 600 feet?

Answer not enough information use a voltage drop calculator >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Use these two calculaters.....….. http://www.csgnetwork.com/voltagedropcalc.html or http://www.elec-toolbox.com/calculators/voltdrop.htm Good luck. Brian...

# What will be the Cable size for 150 amp load if the phase to phase voltage is 220 volts?

At least 50mm but with all the de-rating factors it might be 70mm that's if its 2 cable single phase non armoured clipped direct. Check out the tables dopey!!!! FYI 50 mm = 2… inches, 70 mm = 2.75 inches these are not wire sizes, sound more like cable outside diameters. Correct answer The wire size is dependant on the insulation factor on the wire. A few common insulations and corresponding wire sizes for 150 amps are - Size 0 R90 good for 155 amps, also with insulations of RW 75, TWH, TW75, good for 150 amps. Size 000 TW good for 165 amps.

# How much voltage will be drop due to long length of cable?

it depends on the size of wire used, however, the required voltage drop shall not exceed 5% of the line voltage Answer According to BS 7671 Requirements for Electrical …Installations, the UK's Wiring Regulations, the maximum allowable voltage drop for lighting circuits: 3%, and for other uses 5%. Other national wiring regulations may be different.

# What is the formula for calculating the voltage drop across the cable?

The formula for a simple DC voltage drop across a cable is: VDrop = Vmeasured at the input of cable - Vmeasured at the output of cable This formula may seem simplistic how…ever keep in mind that the sensitivity, accuracy and resolution of measuring instrument instrument is what is really important. If you know the DC current flowing through the cable and the impedance of the cable then you can use Ohm's law. Vdrop = I R where Vdrop is the voltage drop across the cable in volts I is the current flowing through the cable in amperes R is the resistance of the cable in ohms. ADDITIONAL Calculation of the voltage drop is given by the formula below Voltage Drop (Volt) = [(mV/Am)/1000] * I * l Where mV/Am = millivolt drop per meter per ampere of the cable (this information is given in the table based on IEE Wiring Regulation) I = Current in the cable (in Ampere) l = Distance of cable (in Metre) See related links below

# How can calculate HT cable size for 500mva transformer rating and voltage 11kv?

500Mw at 11kv works out to 45000 a a bit big for any wire manufactured on this planet suggest you go to a more practical voltage like 132,000V Answer Since we are i…nevitably talking about a three-phase transformer, the line current is determined from IL= rated apparent power / (1.732 x UL) = (500 x 106) / 1.732 x 11 x 103) ...which works out at 26 244 A which, as the original answer suggests, is not a practical value for this combination.

# What is the minimum distance to live near high voltage cables?

A: Must define hi voltage and environment first

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# How do you compute the voltage drop over a 500-meter underground cable?

You need the voltage drop per meter, from data on the cable, and then multiply by 500. Alternatively find the resistance per metre of a single cable of the same wire size, fr…om wire tables, then multiply by 2 x 500 x resistance (in ohms) x current (in amps).

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# What is the difference between low voltage and high voltage same size cable?

The difference between low voltage and high voltage for the same size cable is that cable size affects current carrying capacity, while power is voltage times current. As a r…esult, the same size cable can transfer more power at high voltage than at low voltage. This is why utility power transmission and distribution systems use high voltage. A typical transmission voltage in the US might be 69 kv, 138 kv, even 345 kv, and a typical distribution voltage in the US might by 13.2 kv.

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# Electricians have another term for voltage drop in a cable What is it?

Answer the formular notation for voltage drop is Ed Another possible term is "IR loss" meaning the current (I) x resistance (R) loss on the wir…e part of a circuit

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In Technology

# What is voltage drop?

The relative voltage difference that appears across a component while a circuit is operating.

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# What will be the voltage drop across two core cable whose length is 1500m and voltage is 24v DC and load is 2 watts?

Unanswerable. You need to specify the core size and material. Using two 10 AWG wires with a diameter of 2.6 mm each, the voltage drop over 1500 metres would be less than 1 vo…lt.