In our letter of June 3, 1992, we informed you of the Board's approval of your Cytolok Cable Connectors but with the approval being restricted for use with copper conductors only. 

This restriction was still in effect, even after your letter of July 29, 1992 and your presentation to the board at its meeting of September 16, 1992, wherein you stated that the conductors in the connectors are always under constant compression. 

However, the Board at this meeting agreed to remove the copper only restriction, thereby allowing use with aluminum conductors, if a testing laboratory would conduct an ivestagation and submit a report to this effect. 

On April 5, 1993, you submitted a report from a testing laboratory, I.e. Southern Electric International Inc.., Wherein in the conclusion, it was stated that "the connector is expected to maintain a spring load on the conductor through thermal cycles while the connector is in service." 

Accordingly, the Board at its meeting of April 15, 1993, after reviewing the testing report and other pertinent material, agreed to remove the copper only restriction.. 

Therefore, your Cytolok Cable Connectors Catalog #CL followed by Suffix 502, 503, 504, 510, 525, 536, 544, 570 or 576 may be followed by Suffix-2 are approved for use in New York city for both copper and aluminum conductors. 

I concur in this recommendation. 

Based on the information provided with reference (a), the Buchanan Cytolok cable connectors are acceptable for shipboard installations. This is based on your providing evidence of UL listing as meeting UL 486B, which applies to both aluminum and copper conductors. 

Please ensure future correspondence on this project includes reference to the USCG project file number P001464. This number will be used to track all corresponding throughout the review process at the Marine Safety Center (MSC). Use of this file number will greatly facilitate the ease and accuracy with which we process you submittal. 

We have received samples of the above connectors and we understand that you have approached several line departments of B.C. Hydro demonstrating these connectors. As you know, in B.C. Hydro's system these connectors can only be used for a limited number of applications, namely for connecting secondary conductors to low profile transformer spades as well as to three phase padmounted transformer pads. 

The hole size of all secondary padmounted transformer spades and or pads are 9/16"(14mm) and the connectors must be fastened with 1/2" (12mm) bolts and nuts. 

The connectors presently used are one and two hole lug connectors which are also used for other applications throughout B.C. Hydro. For the last tender we were unable to evaluate the Cytolok connector system. The next connector tender will be issued July 1996 and by that time our evaluation of the Cytolok connector and it's application will be completed. 

The Specifications for Electrical Installations Committee of Niagara Mohawk Power Corp.. has reviewed the Cytolok connector information you provided. 

Based on the test results provided by Cytolok and our Meter and Testing Lab we approve this UL listed connector for use in terminating single conductors within the meter trough. The connector terminates on the provided studs using either top or bottom entry of the enclosure. 

Company ...............CYTO Limited 

Place of ..................Headborough, 
Manufacture............Knockanore, 
...............................County Waterford, 
...............................Ireland. 

Description ............Electrical Terminal Connectors 

Types.....................CYTOLOK Catalogue Numbers:- 
..............................(For metric wire sizes) .. 

..............................302, 308, 316, 324, ..............................334, 342, 348, 358, ..............................366, 368,374, 410 
..............................(For USA wire sizes).... 

..............................504, 510, 526, 536, 
..............................544, 560, 570, 576 

Design Codes.........Manufacturer's ..............................specification. SEN 24 50 ..............................12 Crimped joints. ..............................Electrical Connections ..............................with limited tensile. ..............................strength for aluminum ..............................General requirements, and ..............................testing.  
..............................VDE 0220 Part 2 1971 ..............................Specifications for pressed ..............................connectors to be used in ..............................power cable installations. 

Certificate..............88/0291 

Approval Date.......27 July 1988 

Expiry Date...........26 July 1993 

Addendum.............2 Continuation Sheets