This unique TPA 3-phase test adaptor enables earth continuity and protective conductor current measurements to be carried out on 3-phase machinery, as required by the IEE Code of Practice. The Seaward TPA range of 3-phase test adaptors are built for use with the PrimeTest 250 PAT tester, allowing quick and easy measurement of the earth continuity without removing covers or disconnecting wires to gain access to the protective conductor in the in-coming supply. Simply connect the adaptor in-line with the 3-phase equipment under test and connect to the PrimeTest 250. The TPA is powered from the 3 phase supply and requires no additional power supply or batteries. At the push of a button, earth continuity and protective conductor current tests will commence and a digital reading of the measured values will be given on the PrimeTest 250 display. Available in both 16A and 32A versions with star (5 pin) plugs and sockets.