What problems can occur with modification or rewiring operations and how can these be overcome?

Rewiring:

1. Obtain the existing documentation, electrical drawing. If you do not have, make one before attempting to rewire.

2. Note down the minute details of the existing drawings, terminal number etc

3. Note down the wire type, sizes.

Carry out the rewiring.

Modification:

1. Obtain the existing documentation, electrical drawing. If you do not have, make one before attempting to rewire. 2. Note down the minute details of the existing drawings, terminal number etc

3. Prepare a modified drawing, with terminal numbers etc.

Carry out modification.

Understand the functionality and ensure you have the same or modified functionality after rewiring or modification. Test the circuit before you hand over to the end user.