CL&P

Imploding Splice Connectors Project

As part of CL&P’s ongoing effort to improve the reliability of our transmission

lines, we will be replacing high-voltage connections with a new technology.

The upgrade calls for using a device that sounds similar to a loud clap of thunder

and lasts for an instant. The process is safe and has been approved

by federal, state and local officials. In advance of this work, our crews will also

clear vegetation from access roads and work sites on CL&P rights of way.

For more information on this transmission upgrade, please call Frank Poirot at CL&P

at 860-665-3409.

Questions and Answers

November 2, 2006

Why is this project important to CL&P customers?

The project replaces critical connectors that are about 40 years old with a new technology that vastly improves the reliability of the transmission system.  This is important maintenance that will ensure reliability of our lines for years to come.

Will this work interrupt electric service to my home or business?

No, this work will have no impact on the local distribution system which serves individual customers.  The work is done by highly-trained linemen while the line is live, as electricity continues following through.

Is this work safe?

Use of this technology in the field has been reviewed and approved by the federal bureau of Alcohol Tobacco and Firearms, the Connecticut State Police and local fire marshals.

How does this new technology work?

The inside of the connector collar is lined with a detonator cord that implodes when triggered. The release of energy fuses the collar to the transmission cables forming a strong, water-tight connection.

Will residents hear a noise associated with the work?

The technology uses an imploding technology that makes a noise similar to a loud clap of thunder.

How were these transmission lines chosen to receive this new technology?

The CL&P system contains more than 1,600 miles of overhead transmission lines in Connecticut.  We identified more than 100 miles of our most critical transmission lines for this upgrade.

Is there a reason this project is starting in November?

Yes, we are trying to avoid working on these lines during the summer months, which is the peak season for customer demand.

The CL&P communications plan includes:

• Working with federal, state and local officials to approve use of this innovative technology.
• Reaching out to the neighborhood near the transmission right of way with an auto dialer message, past cards and door hanger notification.

CL&P's work in the Manchester/Glastonbury area will be completed by January

23, weather permiting.