Digi-Watt watthour counters are designed to be mounted in any type of standard electrical enclosure, a meter socket is not used.  The meter is connected to the neutral line and to each of the power lines to provide the voltage reference for the power measurement and to provide power to run the meter.  The power line carrying the current to be measured is passed through a current transformer (CT) and the CT is connected to the meter.  A 120 volt service requires one CT, a 240 volt service with neutral requires two CTs and three-phase, 208 volt service, needs three CTs.  A 240 volt service without neutral requires one CT and a three phase delta service (no neutral) requires two CTs. Connecting two wires from an electromechanical display counter completes the installation.  

Warranty The manufacture warrants its products, if used in accordance with all applicable instructions, to be free from original defects in material and workmanship for a period of five years from the date of manufacture. If the product should prove defective in material or workmanship within that period, Davidge Controls will repair or replace the product, in its sole discretion. Service under this Warranty can only be obtained by your delivering or shipping the product (with all shipping or delivery charges prepaid) to: Davidge Controls. Call MetersUSA 1(847) 302 7691 for a Return Material Authorization (RMA) before sending any equipment back for repair.

THIS WARRANTY DOES NOT APPLY TO NORMAL WEAR OR DAMAGE RESULTING FROM ACT OF GOD, ACCIDENT, MISUSE, ABUSE, OR NEGLECT.  SELLER MAKES NO EXPRESS WARRANTIES OTHER THAN THE WARRANTY EXPRESSLY SET FORTH HEREIN, EXCEPT TO THE EXTENT PROHIBITED BY APPLICABLE LAW. ALL IMPLIED WARRANTIES INCLUDING ALL WARRANTIES OF MERCHANTABILITY OR FITNESS ARE LIMITED IN DURATION TO THE WARRANTY PERIOD SET FORTH ABOVE AND THIS WARRANTY EXPRESSLY EXCLUDES ALL INCIDENTAL AND CONSEQUENTIAL DAMAGES. (Some states do not allow limitation on how long an implied warranty lasts, and some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitations or exclusions may not apply to you. This Warranty gives you specific legal rights, and you may have other rights which vary from jurisdiction to jurisdiction).