9NOTICE: This guide recommends minimum branch circuit sizing and wire size based on National Electric Code.Refer to wiring diagrams in this manual for field wiring connections.Insulation blankets, available to thegeneral public, for external use onelectric water heaters are not necessary.The purpose of an insulation blanket isto reduce the standby heat lossencountered with storage tank heaters.This water heater meets or exceeds theNational Appliance Energy ConservationAct standards with respect toinsulation and standby lossrequirements making an insulationblanket unnecessary.The manufacturer’s warranty does notcover any damage or defect causedby installation, attachment or use ofany type of energy saving or otherunapproved devices (other than thoseauthorized by the manufacturer) into,onto or in conjunction with the waterheater. The use of unauthorized energysaving devices may shorten the life ofthe water heater and may endanger lifeand property.The manufacturer disclaims anyresponsibility for such loss or injuryresulting from the use of suchunauthorized devices.CAUTION: If local codes requirethe application of an externalinsulation blanket to this waterheater, pay careful attention to thefollowing so as not to restrict theproper function and operation ofthe water heater:● Do not cover the temperature andpressure relief valve.● Do not cover jacket access panels tothermostats and heating elements.● Do not cover the electrical junctionbox of the water heater.● Do not cover the operating or warninglabels attached to the water heater orattempt to relocate them on theexterior of insulation blanket.Branch Circuit Sizing and Wire Size GuideTotal Water Recommended Over Current Protection Copper Wire Size AWG BasedHeater Wattage (fuse or circuit breaker amperage rating) on N.E.C. Table 310-16 (75°C)120V 208V 240V 120V 208V 240V1500* 20 15 15 12 14 141700 20 15 15 12 14 142000 25 15 15 10 14 142500 30 15 15 10 14 143000 35 20 20 8 12 123500 – 25 20 – 10 123800 – 25 20 – 10 124000 – 25 25 – 10 104500 – 30 25 – 10 105000 – 30 30 – 10 105500 – 35 30 – 8 106000 – 40 35 – 8 89000 – – 50 – – 8*Less than 1500 watts may be wired 14 gauge with 15 amp protection. Check Local Electrical Codes, as they will also apply.Safety Instructions Installation Instructions Operating Instructions Care and Cleaning Troubleshooting Tips Customer ServiceInsulation Blankets