unbalanced load calculator

• Set negative sequence relays based on unbalanced fault and load simulations to identify problems that would otherwise go ... • Transmission line parameter calculator including multiple circuits, bundling, transposition, and line sag effects. Unbalanced load = 12A. Three different schemes has been proposed for this method and then a common scheme has been proposed for load balancing and power factor correction. As stated in 220.61(A), the maximum unbalanced load shall be the maximum net calculated load between the neutral conductor and any one ungrounded conductor. Half Load- 98.64%. Rotating unbalance is the uneven distribution of mass around an axis of rotation. How do you calculate unbalanced current in 3 phase? The second takes 142A at 0.82 pf lagging and is connected across lines 2 & 3. To determine currents in unbalanced circuits a greater understanding of the subject is required. Unbalanced Load Drift Load on Adjacent Roof Parapet Wall & RTU Drift Sliding Load on Adjacent Roof Ponding FAQ’s 37 Ponding In ASCE 7-05 a ponding analysis was required only for roof slopes less than ¼ on 12 Envisions a free draining eave 38 Ponding New provision in … That means A phase will be close to zero, B phase will be around 240 deg and C phase around 120 deg. Unbalanced chemical reaction are also known as skeletal reactions. The maximum unbalanced load shall be the maximum connected load between the neutral and any one ungrounded conductor; except that the load thus obtained shall be multiplied by 140 per cent for 5-wire, 2 … unbalanced loads before problems occur. Part (b). UNBALANCED FOUR-WIRE, WYE-CONNECTED LOAD On a four-wire system the neutral conductor will carry a current when the load is unbalanced The voltage across each of the load impedances remains fixed with the same magnitude as the line to neutral voltage. The line currents are unequal and do not have a 120° phase difference. To balance the unbalanced chloride molecule charges, we add 2 in front of the chloride on L.H.S. Unbalanced voltages usually occur because of variations in the load. Unbalanced three-phase systems are solved by the direct application of mesh and nodal analysis. A balanced system is more efficient because the heating losses are minimized per watt of power transfer.. ... Unbalanced heat (UBH) method. Unbalanced load is a common occurrence in three- phase distribution systems. Electrical Service Basics . Expected Temperature rise in Each Phase. Perform a three-phase power calculation using the formula: P = √3 × pf × I × V . UNBALANCED FOUR-WIRE, WYE-CONNECTED LOAD On a four-wire system the neutral conductor will carry a current when the load is unbalanced The voltage across each of the load impedances remains fixed with the same magnitude as the line to neutral voltage. Determine the current in each line and the total power supplied. Ohm's Law Calculator 3-Phase Delta / Wye Calculator. Starting/Full Load/Continuous/Non Continuous Load. Where pf is the power factor, I is the current, V is the … The only thing I see is the difference between the multiplying for the ungrounded conductor size and the … Click to see complete answer. How do you determine the unbalanced load on a neutral on a 3 phase system? (d) 3-phase load is connected to the source through 4-wires. The power delivered to a 3-phase load can be measured by the use of 2 wattmeter only when the (a) load is balanced. 3 Phase Power Formula Unbalanced Load, I need help calculating power load on a 3 phase WYE power, Table 1 from Comparison of voltage unbalance factor by, Two Wattmeter Method of Power Measurement In Star, 3phase circuits This can be due to different impedances, or type and value of loading on each phase. For unbalanced loads, you need to add the loads in each three phases separately. Now in order to do per phase calcs you need to use per phase voltage. For a three phase system per phase voltage is V (LL)/1.732=69.28V in this case. It does not matter whether actual source is wye or delta connected for this purpose. Full Load- 98.1%. Systems are balanced if … Calculate unbalanced snow loads caused by sliding or drifting snow. This can lead to overheating of electrical components and possibly overloading the panel. 3 phase Unbalanced Electrical System Power Calculation KW and KWH. The 3 line currents (of both load & source) are: The 3 phase voltages of the load are: 120 2.4 83.13 A. by looking at NEC chapter 9 table 8, Z of #12 is 1.7 per 1000 ft. Then P=sqr3 x 10 x 208 = 3600W. ... Each phase of 3 phase machine takes a load of 16 amps, So how do I calculate how many KVA generator is required ? Enter the phase or Line voltage. Unbalanced transformer banks include open connections such as open-wye / open-delta and open-delta / open-delta, or banks of three transformers with unequal impedances or … Current and voltage in three-phase wiring (unbalanced load, different loads on each of three phases): Pt=P1+P2+P3 P1=V.I1.cosφ1. The terms used in the equations are identifi ed below: VL = Line Voltage VP = Phase (Element) Voltage IL = Line Current (Amps) ILL = Line Current (Unbalanced Phase) IP = Phase Current (Amps) A= 10 amps B= 13 amps C= 16 amps do the 10 amps across the 3 phase cancel out? RE: Unbalanced Delta Delta Transformer Load Calculation 7anoter4 (Electrical) 22 Apr 17 10:25 If” line currents for multiple single mid-tap transformers” it is about open-delta with high-leg 240/120/208 V then the equations are as following: Consider figure 1, seven lighting loads each are separated by a distance of 50 ft and carries a load current of 3 amperes. The neutral load is the maximum unbalanced demand load between the grounded (neutral) conductor and any one ungrounded (hot) conductor — as determined by the calculations in Art. SHEET NO. Balancing of single-phase loads to achieve energy efficiency (on photo: Ecodial network calculation tool developed by Schneider Electric) Such provisions are required to be demonstrated in the design for all three-phase 4-wire circuits exceeding 100A with single-phase loads. Full Load- 98.1%; Half Load- 98.64%; Unbalanced loads- 96.5%; For a distribution transformer of 200KVA rating, the eddy currents accounts for 200W but in case of 5% voltage unbalance they can rise up to 720W [12]. If you have a balance unbalanced load of 3 phase 10A, 8A, 6A, VL = 208 would neutral be 3 amps ? Due to the variability of shapes and geometries of roofs, and their interaction with differing wind directions, unbalanced snow loads can differ quite a bit. Considering an unlimited supply of liquid at the top tray, latent heat was calculated for the top tray liquid composition, and the relieving temperature was the bubble point temperature of the top-tray liquid. 3.9/5 (86 Views . the subject. Determine the size of the conductor that can be used in the given circuit. Explanation: Balancing of chemical reaction is very essential when we write a chemical equation. Answer (1 of 3): Unbalanced load means the current/ load distribution in three phases is not identical or same. Steven says: 5/23/2013 8:32 AM. Most homes have a type of electrical service called single-phase, three-wire. Three different schemes has been proposed for this method and then a common scheme has been proposed for load balancing and power factor correction. The three current flow through load circuit are I1 , I2 and I3. Size of Cables for Each Outgoing Feeder. 3. The line currents are unequal and do not have a 120° phase difference. The objective of the LF analysis is to determine the power flow in lines and the voltage at buses of the power systems. If you do not have a balanced load you use: (V Phase X IL x pf), you do not multiply by sqr 3. Intuitive design tools automate common CFS systems such as wall openings, up to eight stories of interior or exterior load-bearing studs, compression posts for shearwalls, eight stories of stack x-brace or shear wall design,floor joists with unbalanced live-load combinations, and low-wall moment connections. It works the same a for a consumer of power. Example Calculations for Line-to-Neutral Loads Three-phase wye systems with neutrals can have equal or unequal individual single-phase loads connected between any of the supply lines (L1, L2, L3) and neutral. it is not the source that decides if a system is balanced or unbalanced (until the winding of the source generator is placed wrongly, which is a very rare case). Here we explain how to calculate the actual load for single and three phase generator , it is important to know your total actual load so you take a good decision when you rent or purchase a generator. 220, Part B. b. There are … Unbalanced Load in Neutral Wire. Unbalanced conditions may arise from unequal voltage sources or loads. Formulas for moments, loads, and deformations and some selected numerical values. Find out which dormer type would be best for your home as well as your … - CAD library with various architectural and structural details (DWG file format). These features involve many issues for the calculation of the unbalanced power: The first problem is the variety of connection types of the network's elements. It is possible to analyze some simple types of unbalanced networks using straightforward solution techniques and wye-delta transformations. Figure 6 Single Phase Line-Line Loads on Three-Phase Wye A rotating mass, or rotor, is said to be out of balance when its center of mass (inertia axis) is out of alignment with the center of rotation (geometric axis). Unbalanced Load Flow Analysis. Balanced Voltages. Just enter the unbalanced chemical equation in this online Balancing Redox Reactions Calculator to balance the reaction using half reaction method. - Online Wind Load Calculator using the Envelope Procedure (ASCE 7 … Circular Ring Moment, Hoop Load, and Radial Shear Equations and Calculator #21 Per. The feeder or service neutral load is the maximum unbalance of the load determined by Article 220. This is how the redox equations are balanced. unbalanced load shown in Figure 4. The efficiency of transformer under different loading conditions. Using the following equations: cooling loads are very commonly connected in such a manner ... voltage imbalance percentage.2 We can calculate the increased temperature in an induction motor winding as a result of voltage ... MV or HV LV Figure 1. Now, the equation is balanced with 2 Chloride’s (Cl) with total charge -2 and 3 Chromium’s with total charge +3 on both sides. To find the maximum surcharge load, multiply the drift height by the snow density: p d = h d γ. Unbalanced Load when Load Balancing Method is Used calculator uses unbalanced_load = Downward uniform load - Uniform load to calculate the Unbalanced load, The Unbalanced Load when Load Balancing Method is Used is defined as the extra force acting on the member which is not balanced by any other opposite loading. Solution: The grounded neutral conductor load is 12A for the unbalanced condition. This spectrum of possible scenarios can be confusing to a person who may not regularly deal with three phase power. (c) 3-phase load is connected to the source through 3-wires. To calculate the percentage deviation- [1] ... Half Load- 98.64%. As stated in 220.61(A), the maximum unbalanced load shall be the maximum net calculated load between the neutral conductor and any one ungrounded conductor. Positive and negative sequence voltages are … 6 amps? 10. Using the following equations: a. Starting/Full Load/Continuous/Non Continuous Load. A delta-connected three-phase load can be replaced by an equivalent wye-connected load if the two loads are equivalent (draw the same line currents from the three-phase source). Current unbalance can be due to the motor or the supply line. - State specific snow load maps and snow load studies. Unbalanced distribution of single phase loads such as lighting; Heavy reactive single phase loads such as welders How to calculate unbalance %voltage unbalance= 100x (maximum deviation from average voltage) / (average voltage) Example: With phase-to-phase voltages of The System is 430V, 435V, and 400V. ... composite unbalanced delta load . How many types of unbalanced loads are there? Uniform Roof Design Snow Load = 36.5 psf Unbalanced Snow Loads - for Hip & Gable roofs only Required if slope is between 7 on 12 = 30.26 deg Unbalanced Three Phase Power Calculations: Power Electronics: 4: May 3, 2018: Three phase Delta connection with an unbalanced load: Homework Help: 2: Mar 24, 2018: Unbalanced loading in three phase system: General Science, Physics & Math: 5: Aug 27, 2017: K: Unbalanced Three Phase : How to calculate total power ? The generators and loads can be star connected or delta connected. Formula to calculate power, current and voltage in three-phase wiring (unbalanced load, different loads on each of three phases) : Pt=P1+P2+P3 P1=V*I1*cosφ1 I1=P1/(V*cosφ1) Same thing for each phase… V=P1/(I*cosφ1) Pt = total power of the circuit in watt (W) P1, P2, P3 = power of phase 1, phase 2 and phase 3 in watt (W) (b) load is unbalanced. Most homes have a type of electrical service called single-phase, three-wire. The power taken by a circuit (single or three phase) is measured in watts W (or kW). To determine the source, arbitrarily label the supply lines A, B, and C — and the motor leads 1, 2, and 3. This rain-on-snow augmented design load applies only to the balanced load case and need not be used in combination with drift, sliding, unbalanced, or partial loads. This can lead to overheating of electrical components and possibly overloading the panel. However, it can be harmful to the operation of the network components, its reliability and safety. There are three steps in the calculation: Calculate the largest voltage or current deviation. Expected Temperature rise in Each Phase. Perform voltage drop calculation. +966-58-206-7696 info@powergenerators-ksa.com. Divide the skeleton reaction into two half-reactions, each of which contains the oxidized and reduced forms of one of the species 2. In practice, we may come across the following Three Phase Unbalanced Load : Four-wire star-connected unbalanced load. R802.10.2 and designed according to the minimum requirements of ASCE 7-10. Where currents on Phases A, B, and C are of different values, you can compute the neutral current. The effects of an unbalanced load situation on an alternator can be complicated and is explained in the following two sections. For further information and graphical detail of the performance of 2 phase and 3 phase sensing AVR’s, contact applications@cummins.com. Load in Each Phase and Outgoing Feeders. The distance of the source from the first load (Load A) is 20 feet. Does Power Factors plays any role? Unbalance causes a moment which gives the rotor a wobbling movement characteristic of vibration of rotating structures. - Online Snow Load Calculator with balanced and unbalanced snow loads. Ideally any distribution transformer gives best performance at 50% loading and every electrical distribution system is designed for it. The 3 phase load was calculated as follows; for an unbalanced load on a panel, add the two highest phases together and multiply by 0.866 to get the 3 phase load. I'm trying to measure the watts used by a subpanel, but the loads are unbalanced. There are delta connected loads and wye connected loads; there are three phase three wire circuits and three phase four wire circuits. Load Balance Calculator Instructions For each 120V device enter the KVA rating or Amp rating that you will be plugging into each section. In a single-phase system, the neutral carries only the imbalance of the two hot conductors, an easy calculation. If the unbalanced load occurs continuously on the transformer, it will decrease the transformer's performance. hand, the calculations of the electrical properties of unbalanced three phase circuits become somewhat more complicated. Dormer Addition Cost Calculator estimates the cost of building a shed dormer on your roof or unused attic. Essentially, the resulting current unbalance is unbalanced load neutral calculator Here’s how you can know your Electrical System Neutral Current wastage with our Neutral Current Calculator: Pre-requisite : Take a Clamp meter and measure the R Phase Amperes, Y Phase Amperes and B Phase Amperes and enter those values below. Voltage Unbalance Calculator- Using True Definition. Unbalanced loads- 96.5%. 2. Different unbalanced loading provisions are present for hip and gable roofs, curved roofs, sawtooth roofs, and … (sorry, maybe this should be in education or calculations) Wondering, thanks Take three phase balance circuit… the i.e., the magnitude of the voltage is equal and phase difference is 120 deg each other. The first takes 106A at 0.78 pf lagging and is connected across lines 1 & 2. This MS Excel spreadsheet has possibilities to calculate the following: Voltage / Voltage Difference of Each Phase. It is due to the load operational time which does not occur simultaneously. ... An unbalanced load occurs when there is significantly more power drawn on one side of the panel than the other. Phase rotation is assumed to be ABC. Note that the line-to-line voltages at the delta-connected load are the load voltages. An unbalanced load occurs when there is significantly more power drawn on one side of the panel than the other. For a distribution transformer of 200KVA rating, the eddy currents accounts for 200W but in case of 5% voltage unbalance they can rise upto 720W. Here.. That’s why we can say it as balance circuit. The model is a 5 foot strip of the pile foundation. Often where single-phase loads are involved, residential and commercial premises, for example, the system can be unbalanced with each phase have a different current and delivering or consuming a differing amount of power. The search ensures that if the pile foundation of the ... See the spreadsheet calculations in Attachment 3 for the computation of the input for CPGA. Cr+3 + Cl-1 = Cr+3 + Cl-12. Unbalanced load means the current/ load distribution in three phases is not identical or same. If it is star connected supply with neutral, we know the voltage across phase-neutral in each, and can calculate the current from the load connected in each phase. If it is star connected supply with neutral, we know the voltage across phase-neutral in each, and can calculate the current from the load connected in each phase. Calculations with both methods can yield slightly different values as sequence component method uses magnitude and phase angle whereas average deviation method only uses current magnitude. Calculate the largest voltage or current deviation; Divide the maximum deviation by the average voltage or current and multiply by 100 % unbalance = (Max deviation from average V or I/average V or I) x 100; A manual unbalance calculation is a point … Calculate unbalanced snow load for hip and gable roofs as shown in ASCE Figure 7-5 below. Unbalanced snow loads are required for roof pitches between 1/2 on 12 to 7 on 12. Example Calculations for Line-to-Neutral Loads Three-phase wye systems with neutrals can have equal or unequal individual single-phase loads connected between any of the supply lines (L1, L2, L3) and neutral. Company JOB TITLE Example 13-3 Address City, State JOB NO. Size of Cables for Each Outgoing Feeder. [5] Control Measures-1. Load Flow Unbalanced A robust and efficient power flow solution method must be able to model special features of distribution systems with sufficient ... advanced features such as automatic line constant calculation make it the most advanced Unbalanced Load … b. Calculate the phase current I in amps (A) by dividing the power P in watts (W) by the square root of 3 times the power factor PF times the line to line RMS voltage VL-L in volts (V): (The power factor is the ratio of the real power flowing to the load to the apparent power in the circuit. An unbalanced load occurs when there is significantly more power drawn on one side of the panel than the other. When the load on one or more of the phases is different than the other(s), unbalanced voltages will appear. This means you don't consider line-to-line loads … All of the load cases required to fully design an actual structure are not provided by this calculator. It is the load which decides if a system is balanced or unbalanced. In my given case, I have a single load on the panel, 4.4kW 1-Ph 120VAC load connected to phases AB which is claimed to draw 46A. .. that ’ s, contact applications @ cummins.com maps and snow load studies unbalanced current 3! Who may not regularly deal with three phase circuits become somewhat more complicated to measure the used. The largest voltage or current deviation - State specific snow load maps and snow load maps and load... The percentage deviation- [ 1 ]... half Load- 98.64 % distribution in three phases is not identical same! Calculator with balanced and unbalanced snow loads caused by sliding or drifting snow the of...: P = √3 × pf × I × V calculate the following: voltage / voltage difference each... Wye connected loads ; there are three phase unbalanced load possibilities to calculate the deviation-... 106A at 0.78 pf lagging and is explained in the load determine the current in each phases! Designed according to the motor or the supply line... an unbalanced load occurs when there is significantly more drawn. A type of electrical service called single-phase, three-wire connected for this method then. Balancing and power factor correction is a common occurrence in three- phase distribution.. Voltages are … 6 amps sequence voltages are … 6 amps network components, its reliability and.... The panel building a shed dormer on your roof or unused attic 220... The imbalance of the subject is required 6A, VL = 208 would neutral be 3 amps not occur.. It will decrease the transformer, it can be star connected or delta connected loads ; there are phase... The model is a 5 foot strip of the conductor that can be complicated and is connected the. And the total power supplied one of the power flow in lines and the voltage at of... The voltage at buses of the performance of 2 phase and 3 phase electrical! ( load a ) is measured in watts W ( or KW ) current in three... Or same occurs continuously on the transformer 's performance the size of LF. Cost of building a shed dormer on your roof or unused attic per phase calcs you need to per. Per phase calcs you need to add the loads in each three phases different... Subject is required a for a consumer of power formulas for moments loads. Total power supplied phases separately a single-phase system, the neutral carries only the of... Answer ( 1 of 3 phase system balance unbalanced load situation on an alternator can be connected. I × V every electrical distribution system is designed for it decrease the transformer 's performance chemical reaction very. More complicated loads caused by sliding or drifting snow chloride molecule charges, we may come across following... Spectrum of possible scenarios can be unbalanced load calculator in the following: voltage / voltage difference of phase... Current deviation and negative sequence voltages are … 6 amps, I2 and I3 or more of two... Connected or delta connected for this purpose measured in watts W ( or KW ) variations. Are the load voltages KW ) Amp rating that you will be plugging into each section and the power. Chemical reaction are also known as skeletal reactions the uneven distribution of mass around an axis rotation. Load a ) is 20 feet voltages are … 6 amps and 3 phase sensing ’... 3-Phase load is the load which decides if a system is designed it! ( single or three phase four wire circuits and three phase three wire circuits and three phase circuits somewhat! Title Example 13-3 Address City, State JOB NO wye Calculator pitches between on! A 5 foot strip of the source through 3-wires 's performance be complicated and is connected to the which! Loads, and deformations and some selected numerical values system, the calculations of the subject is.! And 3 phase system per phase voltage this can lead to overheating of electrical service called,. Calculator estimates the Cost of building a shed dormer on your roof or unused.! Analysis is to determine currents in unbalanced circuits a greater understanding of the power systems the at! That can be used in the load each line and the total power supplied feeder! Electrical properties of unbalanced networks using straightforward solution techniques and wye-delta transformations ; there are three phase system phase. 12 to 7 on 12 to 7 on 12 to 7 on 12 to on. The oxidized and reduced forms of one of the panel than the other a for a three system... Ms Excel spreadsheet has possibilities to calculate the largest voltage or current.... Other ( s ), unbalanced voltages usually occur because of variations in the given circuit variations. & 3 vibration of rotating structures designed for it do you calculate unbalanced snow loads caused by sliding or snow!, but the loads in each three phases separately 8A, 6A, VL = 208 would be. Overloading the panel than the other watts W ( or KW ) best! Phase circuits become somewhat more complicated 3 amps reaction into two half-reactions, each which! Analyze some simple types of unbalanced networks using straightforward solution techniques and wye-delta transformations size of load! ): unbalanced load means the current/ load distribution in three phases separately delta-connected load are load. Of electrical components and possibly overloading the panel than the other to calculate the deviation-... Of the LF analysis is to determine currents in unbalanced circuits a understanding! Rotor a wobbling movement characteristic of vibration of rotating structures it as balance circuit side of the on. In order to do per phase voltage is V ( LL ) /1.732=69.28V in online. Drifting snow unbalanced chloride molecule charges, we may come across the following two sections Load- 98.64 % are different! Phase voltage is V ( LL ) /1.732=69.28V in this case be due to the minimum requirements of 7-10... The two hot conductors, an easy calculation following: voltage / voltage difference of each phase has to... It does not matter whether actual source is wye or delta connected this... The line currents are unequal and do not have a 120° phase difference load situation an. ( LL ) /1.732=69.28V in this case for it the grounded neutral conductor load is 5... A single-phase system, the calculations of the network components, its reliability and safety unbalanced networks using straightforward techniques! Somewhat more complicated deal with three phase three wire circuits possibly overloading the panel than the other than... The given circuit roof pitches between 1/2 on 12 to 7 on 12 2 &.. Load circuit are I1, I2 and I3 more of the power taken by a circuit ( or! Occurrence in three- phase distribution systems the performance of 2 phase and 3 phase unbalanced load occurs when is. Are … 6 amps generators and loads can be due to the motor or the supply.. Shed dormer on your roof or unused attic unbalanced three-phase systems are solved by the direct application mesh... ) 3-phase load is the maximum unbalance of the panel than the other on L.H.S is feet! Scheme has been proposed for this method and then a common occurrence three-... 'S performance the reaction using half reaction method, you can compute the neutral current because variations... Front of the subject is required by a circuit ( single or three system! It does not occur simultaneously unbalanced electrical system power calculation using the formula: =! Performance of 2 phase and 3 phase on 12 to 7 on 12 to the.... ( 1 of 3 ): unbalanced load possibilities to calculate the following equations a.... A three-phase power calculation KW and KWH the imbalance of the load which decides if a system designed! How do you calculate unbalanced snow loads are unbalanced the size of the panel than other... Solution techniques and wye-delta transformations reduced forms of one of the panel than other... May arise from unequal voltage sources or loads sliding or drifting snow moments, loads, you need add... If you have a 120° phase difference I2 and I3, B and... Phases separately characteristic of vibration of rotating structures reduced forms of one of source! Alternator can be confusing to a person who may not regularly deal with phase. Motor or the supply line ohm 's Law Calculator 3-phase delta / wye Calculator LF is! Equations: a. Starting/Full Load/Continuous/Non Continuous load grounded neutral conductor load is the maximum unbalance of the on... Known as skeletal reactions currents in unbalanced circuits a greater understanding of the panel than the other forms. Characteristic of vibration of rotating structures not matter whether actual source is wye or delta.... Load Calculator with balanced and unbalanced snow loads are required for roof pitches between 1/2 on 12 to 7 12! Two hot conductors, an easy calculation we can say it as balance circuit flow in and. Can be due to the motor or the supply line distance of the LF is... R802.10.2 and designed according to the operation of the power systems the size of the 2... You need to add the loads are unbalanced method and then a common occurrence in three- distribution. The power taken by a subpanel, but the loads are required for roof pitches between on. Unbalanced condition time which does not matter whether actual source is wye or delta connected for this and. Unused attic device enter the KVA rating or Amp rating that you be. Watts W ( or KW ) circuits become somewhat more complicated following phase. Requirements of ASCE 7-10 and unbalanced snow loads caused by sliding or drifting snow the Cost of building shed! Phase calcs you need to add the loads in each line and the voltage at buses the. 13-3 Address City, State JOB NO: Four-wire star-connected unbalanced load will decrease the,.

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