Leviton 52000 Serie Directives page 6

Fig. 4 – Three Phase, 3 Wire, Delta (Non-Grounded)
variation of this connection, the panel circuit breakers can also feed a load by connecting the TVSS
panel to the circuit within an approved connection enclosure. In this case, the circuit breakers must
be rated for this load. The TVSS panel should be connected to these breakers through a 30-amp
rated (minimum), 3-pole disconnect switch. This facilitates TVSS disconnection for installation or
maintenance without interrupting power to the load.
5. Conduit attachment: A 2-inch hole in the enclosure is recommended to be used for In-Out conduit
connection.
CAUTION:
THE ENCLOSURE MUST BE PROPERLY GROUNDED BY USE OF #10 AWG
MINIMUM SIZE COPPER WIRE ROUTED TO THE "G" TERMINAL LUG.
6. Attaching the connection leads - TVSS to power lines:
CAUTION:
THE FOLLOWING INSTALLATION SHOULD BE PERFORMED WITH THE POWER
OFF! ALWAYS TURN OFF POWER BEFORE WORKING ON THE TVSS PANEL, SUCH AS WHEN
CHANGING FUSES AND INSERTING OR REMOVING REPLACEABLE MODULES.
Page 4
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V(L-L)
L1
L2
L3
V(L-L)
L1
L2
L3
G
Fig. 5 – Three Phase, 3 Wire with Ground,
Delta (Corner Leg Grounded)
V(L-L)
V(L-L)
G
G N L1 L2
Module 1
TVSS
Module 2
V(L-L)
V(L-L)
G N L1 L2
Module 1
TVSS
Module 2
L3
Module 3
L3
Module 3