400 amp ground wire size. 400 amps * .83= 332 amps conductor- which is necessary for the 400 a...

what cable do I need for a 400 amp service 650 ft run and what tran

Additionally, to have the proper size wire for 200 amps for that distance, you must raise the amps by 20%: 200 Amp Wire (100 ft away) = 250A × 1.2 = 300A Ampacity. It'd help if you used a 300A ampacity wire or higher. The 350 KCMIL wire is ideal for 100 feet distance, 200-amp service, as seen from the KCMIL list.The answer to your question is per the NEC Table 315 (B) (6), which states that for a service of 400A, 400 kcmil conductors are needed for the phases and the neutral for copper wire and 600 for aluminum. For the grounding conductor, the size would be taken from table 250-66 of the NEC, and would be 1/0 for 350-600 kcmil if copper and 3/0 if ...Step 4: Use a Cable Size Chart. Now that you've got your measurements and ratings, it's time to check a cable size chart like below. Find your total circuit length and power source output on the chart to identify the recommended cable size: Current (amps) Duty Cycle (%) 0 to 50 ft. (AWG)Size of wires, grounding wire, conduit for wires all depends (firstly) on what the breaker supplying the power will be rated at. You've now commented that this will be 200A. With (typical, likely) 75 °C rated terminals at both ends this sets a minimum size of 250 kcmils for aluminum wire with an insulation rating of 75 °C or more.In the 100 amp to 400 amp range, we can use thinner wires for feeders that have at least 83% capacity of the feeder specified size. 310.12 (C) Feeder Ampacities part. Specifies that “In no case shall a feeder for an individual dwelling unit be required to have an ampacity greater than that specified in 310.12(A) or (B).”A 1,000 kcmil aluminum or 600 kcmil copper wire is ideal for a 400-amp service. However, the wire to choose for the service panel may differ depending on certain factors, such as wire type and length. It’s important to understand the features of different wires to know which model to use for your 400-amp service.The wire amp chart above will help you determine the correct amperage ratings for different types of wire. Wire Gauge Chart. The AWG wire size chart above will help you determine recommended circuit lengths for voltage drop. ... Residential Grounding Wire: This is bare copper wire that's available in 4-, 6- and 8-gauge solid and stranded ...For a 1000 watt amp, you'll need a 2-ga wire if it's class AB or a 4-ga wire if it's class D. The same goes for a 1200 watt amp. You'll need a 1/0-ga wire if it's class AB and a 4-ga wire if it's class D.I am trying to order a power panel for a chiller plant. This York chiller has a FLA of 231, 460V 3 phase, and min circuit ampacity of 288. I was planning on using a 300 amp breaker to supply this panel. The panel specs say it is equipped with a 400 amp breaker. Can I still use my 300 amp...The recommended wire size for a 60 amp circuit depends on factors such as voltage, distance, location, and material used. For 120V, the recommended wire size is 6 gauge copper or 4 gauge aluminum. For 240V, the recommended wire size is 4 gauge copper or 2 gauge aluminum. For 480V, the recommended wire size is 2 gauge copper or 1/0 gauge aluminum.Ground cables should be the same size (or larger) as the power cable. ** Current Draw figures are based on RMS Power of the amplifier with a 50% efficiency rating. *** Although wire gauge sizes smaller than 10 gauge may be acceptable for the amount of current draw, we recommend using 10 gauge as the smallest wire size for any amplifier of 100 ...To calculate ground wire size, use the Ground Wire Size Calculator. Insulation - Select the thermal rating of the insulation on the wire. Conductor - Choose the material used as a …Sep 3, 2023 · Example 7: Size a copper wire-type equipment grounding conductor for the feeder tap shown in Figure 4. Solution: Enter table 250.122 with 400 A and read conductor size N° 3 AWG, copper. Figure 4. Setup for Example 7. Image used courtesy of Lorenzo Mari . Takeaways of Sizing Equipment Grounding ConductorsApr 8, 2023 · Generally, the ground wire size for a 200 amp service ranges from 2 AWG to 8 AWG. The best one is 2 AWG for copper wire and 4 AWG for aluminum or copper-clad aluminum wire. It is recommended to use them with 1.5-2.5 inches schedule 40 or 80 PVC conduit for underground service. It may differ depending on the materials, permission rules, codes, etc.I am trying to order a power panel for a chiller plant. This York chiller has a FLA of 231, 460V 3 phase, and min circuit ampacity of 288. I was planning on using a 300 amp breaker to supply this panel. The panel specs say it is equipped with a 400 amp breaker. Can I still use my 300 amp...Encore Wire News: This is the News-site for the company Encore Wire on Markets Insider Indices Commodities Currencies StocksAn important difference between using Table 250.102(C)(1) for selecting the right size Bonding Jumpers, and Table 250.66 for selecting the right size for the Grounding Electrode Conductor, is that a Grounding Electrode Conductor never has to be larger than 3/0 AWG.what cable do I need for a 400 amp service 650 ft run and what transformer. On 2020-08-26 y Mike Lange . I am looking for underground wire size needed to run 1200 feet .. I would like a 30 amp 240 volt service . On 2020-08-20 by frank . what size underground wire do I use for 200 amp service for generator that is 200 ft away from the service meter?For the service wire, 150’ isn't quite far enough to have to worry about voltage drop. Service and feeder to a dwelling is entitled to a favorable derate at 83% of service size. So 400A x 0.83 = 332A. You need wire rated for at least 332A at 75C thermal. That works out to 600 kcmil aluminum. (340A).The calculation stands like this: 30 amp wire = 30A x 100% / 80% = 37.5A ampacity. So, with 37.5A ampacity, an 8 AWG wire after 10 AWG wire will perfectly fit 30 amps. The 310-16 code suggests adding an extra 20% of the wire's ampacity for 30 amps every time the distance increases to 100 feet.If you apply the NEC 80% rule, 250 kcmil wire can handle up to 204 amps. That's why it is considered a 200 amp wire. Basically, we are trying to answer what ground wire do you need for 200 amp service. If you consult the copper ground wire size chart above, you can see that you will need a 2 AWG copper ground wire to adequately ground a 250 ...October 9, 2023 by GEGCalculators. The size of the ground wire for an electrical circuit depends on the circuit’s amperage rating. Common ground wire sizes for copper conductors include 10 AWG for 20-50A circuits, 8 AWG for 60-100A circuits, and 6-4 AWG for larger circuits. Always follow local electrical codes and consult a professional for ...Learn what size ground wire and conductor you need for 400 amp service panels. Find out the NEC codes, local building codes and professional tips for copper, aluminum, bare and water ground wires.Ground cables should be the same size (or larger) as the power cable. ** Current Draw figures are based on RMS Power of the amplifier with a 50% efficiency rating. *** Although wire gauge sizes smaller than 10 gauge may be acceptable for the amount of current draw, we recommend using 10 gauge as the smallest wire size for any amplifier of 100 ...Code recommends a max of a 3% voltage drop. Using 240 volts with a 50 amp feed at a distance of approximately 400 feet results in a 2.3% voltage drop or 234.6 VAC at the end of the circuit. You can use 4/0 AL as that will work fine, but it is overkill and a more costly solution. 2/0 AL is all that you would need for this run.Re 3TM CIC Labor Saving Calculator. The industry's first estimator showing the reduction of installation labor for Southwire® Cable-in-Conduit (CIC) compared to pulling cables into PVC ducts. Southwire's cable tray fill calculator takes the guesswork out of your project. Get accurate results and stay within NEC guidelines.Apr 8, 2023 · Generally, the ground wire size for a 200 amp service ranges from 2 AWG to 8 AWG. The best one is 2 AWG for copper wire and 4 AWG for aluminum or copper-clad aluminum wire. It is recommended to use them with 1.5-2.5 inches schedule 40 or 80 PVC conduit for underground service. It may differ depending on the materials, permission rules, codes, etc.230.42 Minimum Size and Rating (A) General The ampacity of the service-entrance conductors before the application of any adjustment or correction factors shall not be less than either (A)(1) or (A)(2). Loads shall be determined in accordance with Article 220. Ampacity shall be determined from 310.15. The maximum allowable current of …For 200 amp panel that's 300 ft from the main service, you'll need to adjust the wire size for 266 amps (with the 83% standard considered). We got it with the following equation: 200 x 160% = 320A. 320A x 83% = 266A. Checking Table 310.16 again, that means you need at least to use 300 MCM copper or 400 MCM aluminum.Electric: Grounding Rod and Wire 400AMP Panel, #2 Copper Wire, Braided; 3 Grounding Rods in SeriesMin. Ampacity (150W) = 12.5A × 1.25 = 15.63A. That means we need a wire size with an ampacity of 15.63A or higher. To choose the correct AWG wire size for a 12-volt circuit, consult the complete AWG wire size chart here. From this chart, we see that 18 AWG wire has an ampacity of 14A (copper wire, at average 75°C).Re: 600 amp service grounding electrode conductor sizing the GEC is sized using table 250.66 based on largest service entrance conductors. But, for sizing the GEC to a ground rod, then you use 250.66(A). See also 250.52(A)(5)(b). If you're using Concrete-encased electrode (UFER) then, GEC not required to be bigger than #4, 250.66(B).OzEng, Thanks for the information.The soil is red clay with plenty of iron in it so there shouldn't be a problem there.The local building code chart guide only goes to 200 amp.It doesn't specify ground rod size just a depth of at least 4' in the ground and using #4 copper for the ground wire.The circuit length to the rod and back is 20'.The typical ground rod size that is sold locally for a ...Circuit breakers are electrical safety devices designed to protect an electrical circuit from damage caused by excess current from an overload or a short circuit. 50 AMP Circuit breaker is common for high-demand appliances in residential, commercial, and industrial settings. Based on allowable ampacities of the aluminum and copper wires, you should use 6 AWG copper wires and 4 AWG aluminum ...Ground Wire Minimum is #4 AWG Copper. A 200-amp service must have a #4 AWG copper wire or a #2 AWG aluminum wire running from the grounding electrode system to the main power panel. There will be a green screw that needs to be installed called the main bonding jumper. This bonds the panel to the neutral/ground bar.The following table shows the NEC grounding wire size recommendation. The higher the AWG number, the smaller the wire. ... grounding, but if you can get a large wire, use it. Circuit Amp Size AWG Copper Wire Size ; 15: 14: 20: 12: 30: 10: 40: 10: 60: 10: 100: 8: 200: 6: 300: 4: 400: 3: 500: 2: 600: 1: 800: 1/0: 1000: 2/0: ... Check your service ...The amperage rating of the box does not matter at all. For example, the box is 500 amps and the biggest wire is 100 amps. Then having a 500 amp rated ground is pointless because the 100 amp wire will melt long before the ground will. The best ground is an 8-foot copper rod you drive into the ground with a sledge hammer. Then you …The wire size chart below shows allowable ampacities of insulated conductors rated up to and including 2000 Volts, 60°C through 90°C (140°F through 194°F), not more than three current-carrying conductors in raceway, cable, or earth (directly buried), based on ambient air temperature of 30°C (86°F). Search Amazon for your Electrical ...Motor HP, Amps and Wire/Conduit Size Table. HP: Voltage: Amps: Wire Size: Conduit Size (Dia. Inches) 5: ... 400: 480/3: 480 (6) 300 MCM+(2)#1 GND (2) 3" or (1) 5" 500: 480/3: 600 (6) 500 MCM+(2) 1/0 GND (2) 3" or (1) 5" 600: 480/3: 720 (6) 600 MCM+(2) 2/0 GND (2) 3" 1250: 4160/3: 148 (3) 3/0+(1)#6 GND: 3"Ground wire between meter enclosure ground lug and ground rod shall be continuous with no splices. ... With Lever Bypass 200 Amp 400 Amp 400 Amp With breaker With breaker Safety LeverBy-Pass Safety Lever By-Pass Safety Lever By-pass Safety Lever By-pass Rev. 1/10/20 Maximum Attachment ... Wire Size Amps Copper Aluminum 100 2 1/0 200 2/0 4/0 400 ...Choose the amperage rating of your circuit’s overcurrent device to calculate the appropriate ground wire size based on the National Electrical Code (NEC). Select Amperage Rating: – 15 Amperes 20 Amperes 30 Amperes 40 Amperes 60 Amperes 100 Amperes 200 Amperes 300 Amperes 400 Amperes 500 Amperes 600 Amperes 800 Amperes 1000 Amperes …If the overcurrent device for the motor consist of a short circuit protector (Or instantaneous trip circuit breaker), then you can size the EGC based on motor overload protect. device, yet it cannot be less than T. 250.122. That was true in the 2005 code but has been changed for the 2008 code.I know that the required size of the grounding electrode for a typical 200 Amp service is a #4 solid copper. Now, we are planning on a 400 Amp service and I'm not sure what size PG&E will be running in the 3" PVC service lateral conduit but the length is approx. 300' so I'm assuming a pretty large set of service conductors.Referring to Table 250.66, the minimum size wire-type common grounding electrode conductor would be 1/0 AWG copper or 3/0 AWG aluminum or copper-clad …600AL is 340 amp conductor. Using 600AL on a service with single main 400 amp OCPD is noncompliant even using the "round up" rule as 350 amp OCPD's are available. A person needs to select a conductor size with an ampacity past 350 amps to be able to select the next size up 400 amp OCPD assuming the calculated load is less than …If you are installing a 400 amp service then you can use conductors based on the table in art. 310 Not sure but if I were doing a calc I would use the 83% for the 200 amp service for the house and 200 amps for the shop which means you could use a wire rated for 366 amps . Reactions: augie47. electrofelon Senior Member. Location Cherry …Then 230.90 says that service conductors must have overcurrent protection sized no larger than their ampacity (but round up of the breaker size being allowed). So if 230.79 says you have a calculated load of 325A, but you choose to install a 400A disconnect, what is the rating of that disconect per 230.79 -- 325 or 400 amps?Apr 10, 2024 · For 150 amp, you will need a 1/0-size copper wir e size. For a 200 amp service, you will need a 250 kcmil-gauge copper wire size. For a 400 amp service, you will need a 600 kcmil-gauge copper wire size. For 600 amp, you will need a 1500 kcmil-gauge wir e size. We’ve got you covered if you want to buy a circuit breaker or a sub-panel.To calculate ground wire size, use the Ground Wire Size Calculator. Wire Size - Choose the size wire in the circuit. Units for wire size are AWG or kcmil. Distance - Enter the one-way length of the wires in the circuit in feet. Note: The results of this calculator are based on conductor temperatures of 75°C. Source: NFPA 70, National Electrical Code, Chapter 9, …Ground cables should be the same size (or larger) as the power cable. ** Current Draw figures are based on RMS Power of the amplifier with a 50% efficiency rating. *** Although wire gauge sizes smaller than 10 gauge may be acceptable for the amount of current draw, we recommend using 10 gauge as the smallest wire size for any amplifier of 100 ...Using a 14-gauge ground wire on a 20-amp circuit is generally acceptable as long as it meets the NEC or local code requirements. What size ground is good for 100 amps? For a 100-amp circuit, you typically need a #4 copper or #2 aluminum ground wire. However, consult the NEC or local codes for precise requirements.Advanced Wire Size Calculator. Enter the information below to calculate the appropriate wire size. Voltage - Enter the voltage at the source of the circuit. Single-phase voltages are usually 115V or 120V, while three-phase voltages are typically 208V, 230V or 480V. Amperes - Enter the maximum current in amps that will flow through the circuit.If you turn to Section 250.122 in the 2020 NEC, you find information that has been helping electricians to size equipment grounding conductors (EGC) for longer than most electricians have been pulling wire. If you were on the job prior to 1996, you would have happened on this information in "250-95" in your Codebook, instead of 250.122.The most wired countries in the world refers to the countries that have the best access to the Internet's resources. Learn about the most wired countries. Advertisement The Interne...Re 3TM CIC Labor Saving Calculator. The industry's first estimator showing the reduction of installation labor for Southwire® Cable-in-Conduit (CIC) compared to pulling cables into PVC ducts. Southwire's cable tray fill calculator takes the guesswork out of your project. Get accurate results and stay within NEC guidelines.The 400 amp welding ground clamp is constructed from copper alloy for excellent conductivity. The ground clamp has a large contact area for positive grounding. The high strength spring ensures solid ground contact. Large hex screws for safe cable connections. Heavy duty copper alloy construction; Large contact area for positive groundingRecommended ground and charge wire size Recommended battery fuse size Less than 200 amps Engine compartment 4 gauge pure Copper or 2 gauge CCA 250 Amp Less than 250 amps Trunk compartment 1/0 gauge copper or 2/0 CCA 250 Amp 250-400 amps Any location 1/0 gauge copper or 2/0 CCA 400 AmpWe would like to show you a description here but the site won't allow us.what size neutral on a 400 amp service? This application is in a building for a utility company and the prints show parallel 4/0 feeds and a single 2/0 neutral ... The effect of the ferrous conduit raising impedence as a function of frequency is why if a transformer ground wire is in EMT or rigid you put a bonding jumper between the wire and ...In the AWG system, the higher the number of the cable rating, the thinner the wire and, therefore, the less current it can carry. For example, if you look at the chart below, you will see that 12 AWG, which has a diameter of 2.05 mm, can carry 20-25 amps up to 4 feet. 14 AWG, which has a diameter of 1.62 mm, can only carry 15-20 amps the same ...Main Terminal Box, 400 Amp, 120/208V AC, 3-Phase, 4-Wire, Aluminum Bus, Bottom Feed (EUSERC), NEMA 3 - Rainproof Enclosure. AIC rated to installed Main Tenant Breaker. Includes: Phase & Neutral Lugs. View product detail below. $ 4241.04 EA.310.12 Table For Wire Sizes (100-400 Amp Service, Feeders) Service Or Feeder Rating (Amps): Copper Wire (AWG or kcmil): Aluminum Wire (AWG or kcmil): 100 Amps: ... What Size Ground Wire For A 200 Amp Service? (3-Step Process) Categories Wiring. kWh To Therms Calculator + Conversion Chart (1 kWh = 0.03412 Therms) ...E3908.13 Equipment Grounding Conductor Size. Colorado Residential Code 2021 > 39 Power and Lighting Distribution > E3908 Grounding and Bonding > E3908.13 Equipment Grounding Conductor Size. Go To Full Code Chapter. Copper, aluminum and copper-clad aluminum equipment grounding conductors of the wire type shall be not smaller than …For example, a 50 amp wire on a 220-volt circuit (you will need a 6 AWG wire) can handle up to 11,000W of power (this is a very common electricity setting for RVs). Here is how you can calculate that: Wattage = Amps × Volts = 50A × 220V = 11,000W. If you have a 110V circuit, the 50 amps will produce 5,500W of power.Ram Ratna Wires News: This is the News-site for the company Ram Ratna Wires on Markets Insider Indices Commodities Currencies Stocks150 Amp Wire Size Calculator. Here you insert wire length, voltage, and allowable voltage drop, and the calculator will determine which gauge wire you need to facilitate 150 amp current immediately. 150 Amp Wire Gauge Charts for 3% and 10% voltage drop. We have calculated wire sizes needed for 150 amp service 50, 100, 150, 200, 300, 400, and ...First, you need to calculate the safe load. Remember that amp circuit breaker should be at least 125% of the load. Thus, in this case, the best breaker size = 10A X 125%= 12.5A. Note: the available breaker size ranges include 15A, 20A, 30A, 40A, 50A, etc. Therefore, in our case, a breaker size of 15A is perfect.OK, it won't be easy, but these five steps will help your next transformer installation run more smoothly.Over 250 through 500. 2. 1/0. Over 350 through 600. Over 500 through 900. 1/0. 3/0. If multiple sets of service-entrance conductors connect directly to a service drop, set of overhead service conductors, set of underground service conductors, or service lateral, the equivalent size of the largest service-entrance conductor shall be determined ...Also keep in mind requirements in 240.4(B) for over 800 amps - you can not use next size higher overcurrent protection so commonly seen use of 500 copper which has ampacity of 380 can be protected at 400, the next size device. But for over 800 amps you can't run three parallel sets of 500 as they only have a combined ampacity of 1140 amps.Sep 3, 2023 · Example 7: Size a copper wire-type equipment grounding conductor for the feeder tap shown in Figure 4. Solution: Enter table 250.122 with 400 A and read conductor size N° 3 AWG, copper. Figure 4. Setup for Example 7. Image used courtesy of Lorenzo Mari . Takeaways of Sizing Equipment Grounding ConductorsMay 6, 2019 · He is requiring the 4oo amp service to have a 400 amp main panel, from there 2 200 amp sub panels. According to load, 500 cmils for service entrance is required. Meter is on the other side of wall. Service coming into the back of the panel. With double lugs on the meter load terminals, two 200a mains would also work.The grounding electrode conductor must be run either to both disconnects or to the meter. In NC we run it to the meter. Also if you look at the notes to 250.66 you would only need #2 copper to the water pipes not 1/0. Also with 4/0 aluminum your calculated load must be 360 amps or less.So what the AHJ is saying is you can run dual 250 kcmil aluminum feeders - so that means 6x 250 kcmil wires for two 200A feeders, plus 1 safety ground wire that can be shared. This scenario calls for you ripping out and selling your 500/300 kcmil wire. The AHJ is not authorizing paralleling! You cannot merge the two 200A circuits onto the 500 ...I have a 400 amp service from the utility to the meter base which will then feed (2) 200 amp disconnects. The utility requires the ground to be bonded in the meter. ... the neutral will then feed the neutral bar in the disconnects but should there also be a ground wire from the meter base the feeds a, separate from neutral, dedicated ground bar ...Using a 14-gauge ground wire on a 20-amp circuit is generally acceptable as long as it meets the NEC or local code requirements. What size ground is good for 100 amps? For a 100-amp circuit, you typically need a #4 copper or #2 aluminum ground wire. However, consult the NEC or local codes for precise requirements.400 amp ground wire size chart. Ampacity nec table chart wire cable electrical rating guide pdf electric sizes panel mm2 tables step sub amps service capacityIeee cable size chart online shopping Wire thhn 220v conductor subpanel shyCable diameter outer gland outside so assume determine choosing olex anything answer core australia made.Now we can calculate the 14 AWG copper wire voltage drop at a 100 ft distance for 15 amp service using the above equation like this: Voltage Drop (14 AWG Copper, 15A, 100ft) = 2 × 100 Feet × 12.9 Ohms × 15 Amps / 4,107 CM = 9.42V Decrease. We can see that the voltage in a 100 ft 14 AWG copper wire drops by 9.42V.400 Amp Electrical Disconnects. Pickup Free Delivery Fast Delivery. Sort & Filter (1) Siemens. 400 Amp 2-Pole Fusible General-duty Safety Switch Disconnect. Siemens. 400 Amp 3-Pole Fusible Heavy-duty Safety Switch Disconnect. Siemens. 400 Amp 3-Pole Fusible General-duty Safety Switch Disconnect.How to determine the best sizing wire for your amp's power and ground. 12 reasons to shop with us | Crutchfield B2B Release shipping with delivery in 2 days instead less See details. 1-844-715-8525 Crutchfield: Legendary Service. Since 1974. SM. Contact us 1-844-715-8525 0 items. Crutchfield: Legendary Service. Since 1974. SM. Your us. …For 150 amp, you will need a 1/0-size copper wir e size. For a 200 amp service, you will need a 250 kcmil-gauge copper wire size. For a 400 amp service, you will need a 600 kcmil-gauge copper wire size. For 600 amp, you will need a 1500 kcmil-gauge wir e size. We’ve got you covered if you want to buy a circuit breaker or a sub-panel.So if using 4 sets each would need a minimum ampacity of 400 amps as you've stated. For THHN copper that would be a minimum of 600 kcmil. AWG sizes end at #4/0. M. ... 1600 amp gear wire size/parallel feed question. Cow said: ... and the equipment grounding conductors shall comply with the provisions of 250.122. Parallel runs in cable tray .... A minimum diameter of 3" shall be used foNote: These values are based on allowable ampac 100 Amp 320 Amp 200 Amp SIZE METER 2" #4 #2 #6 2.5" * 4/0 3" 2/0 #4 ALUMINUM Current carrying & neutral wire size (per NEC) COPPER SIZE GROUND WIRE SIZE 350 500 #2 Notes: 1.The Customer is responsible for clearing and maintaining all right of way. 2.For an 800 Amp service, the wire must have an ampacity rating of at least 800 Amps. Wire Capacity: Choose a wire that can handle the power requirements of the service. Look for wires with a higher capacity, such as 1000 Amps or more, to ensure safety and avoid overheating. Oct 12, 2020 · 2. YES you can use #4 Al as your ground. Yo Choose the amperage rating of your circuit's overcurrent device to calculate the appropriate ground wire size based on the National Electrical Code (NEC). Select Amperage Rating: - 15 Amperes 20 Amperes 30 Amperes 40 Amperes 60 Amperes 100 Amperes 200 Amperes 300 Amperes 400 Amperes 500 Amperes 600 Amperes 800 Amperes 1000 Amperes 1200 ... What size ground rod do I need for residential 4...

Continue Reading