WOODWARD BZ1-P-24

Do not tin (add solder to) the wires that terminate at the EGCP-2 

terminal blocks. The spring-loaded CageClamp terminal blocks are 

designed to flatten stranded wire, and if those strands are tinned 

together, the connection loses surface area and is degraded.

Grounding for Protection Against Electric Shock

Protective Earth (PE) must be connected to the termination point on the backside of the unit next to the 

label with the symbol (or 1 of 3 other like termination points without label) to reduce the risk of electric 

shock. The EGCP-2 ships with 2 thread forming screws (M4 x 6 mm, Woodward #1029-525) for this 

connection. The conductor providing the connection must have a properly sized ring lug and wire larger 

than or equal to 3.0 mm² (12 AWG).

Recommended Grounding Practices

Providing the proper ground for the EGCP-2 is important. Improper connection of the EGCP-2 chassis to 

the ground plane may lead to stray currents between the reference point for the AC signal sources 

(current and voltage transformers), and the reference point for the sensing inputs on the EGCP-2. 

Differences in potential between these two points results in equalizing current flow which then produces 

unacceptably high common mode voltages. Common mode voltages may result in improper readings for 

the sensed AC inputs, or even damage to the EGCP-2 product in extreme cases. To minimize this 

problem, it is necessary to provide a low resistance path between the AC signal reference point, and the 

chassis of the EGCP-2. Typically,this point is the designated ground for the generator set and related 

instrument transformers.

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