Used together, the WTL 6/4 FF (slide link terminal) and the WTD 6/4 FF (standard feed-through) terminal can be configured to create multiple phase testing configurations for current transformer applications. The integrated test socket screw heads allow the user to insert a current meter in series with the circuit without disruption. This prevents the possibility of leaving the current transformer in an open state, which could expose an operator to dangerous voltage levels. Once the meter is securely installed between the screws of the WTL terminal, the operator opens the circuit via the slide link disconnect, which allows the current to flow through the temporary meter. When done, the slide link disconnect is moved back to its closed position and the meter can be safely removed.