![]() ![]() If the cable length is significant, then it might be worth your while to have the discussion in advance with the inspector. What are the dimensions of a 200 amp service panel A 30 space Square D type QO 200 Amp panel is 30 inches tall. The appropriate wire size for a 200 amp electrical service is 4 AWG (American Wire Gauge) copper or 2 AWG aluminum. If the wires are too small they can create circuit breaker problems when they heat up during operation. For a 200 amp service, you will need to use a 4 AWG wire for copper conductors, or a 2 AWG for Aluminum or Copper-Clad Aluminum. We see that the copper ground wire size changes from 4 gauge ground wire for short distances to 2 gauge ground wire for longer distances (50, 100, 150, 200 feet). This wire requires 2 AWG copper ground wire. The cost of installing these wires is usually between 1,000 and 1,500 for overhead systems and 1,500 to 3,000 for underground systems. 0000 (4/0) AWG copper hot wire with 230A ampacity to deliver 200 amps service at a distance. Attach a length of 200-amp SE electrical cable to the new meter socket. I suppose the bottom line is the value of your time to do the load calculation and discuss this with an inspector versus the amount you save in wire costs. A 200 amp electrical service will require aluminum clad wiring, 4/0 aluminum, or 2/0 copper wiring. Bore through the rim joist using an extension shaft and 2-inch-diameter hole saw. This provides plenty of capacity for future circuits and avoids wasting your time arguing. A more common size for a neutral in a residence is two sizes smaller than the phase conductors. Voltage - Enter the voltage at the source of the circuit. ![]() I do agree with you that the neutral can be sized to the maximum unbalanced load if it meets the other requirement for minmum size of ground.īe prepared to show your service calculation if you want to win that arguement with an inspector. The size of wire required for 200 amp service is determined by the type of wire purchased. Enter the information below to calculate the appropriate wire size. Find the electrical service cable that fits your needs at. However, when one tries to do something that is out of the ordinary or unusual the typical reaction from other tradesmen or inspectors is at least surprise or disbelief. Electric companies use service entrance cables to conduct electricity above ground. For most homes, 4/0 AWG copper wire is sufficient to handle the load. The answer depends on the type of system being installed, the length of the run, and the number of circuits required. Then if you assume that all those loads are on one phase, which would never happen, a #4 copper would certainly be plenty large. What size wire for 200 amp service is a common question electricians get asked. If one does a load calculation for a typical residential service, even for a large house, the maximum 120-volt loads are very likely well below 100 amps. ![]()
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