HANDBOOK REQUIREMENTS - Central Maine Power Company
HANDBOOK REQUIREMENTS - Central Maine Power Company
HANDBOOK REQUIREMENTS - Central Maine Power Company
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60<br />
by-pass requirements and the residential socket (non by-pass) may<br />
be utilized:<br />
• Temporary service.<br />
• Outdoor lighting (ball field, tennis court, etc.)<br />
• CATV or Telephone power supply/amplifier.<br />
• Any other non-residential facility that is not "in use"<br />
during the <strong>Company</strong>'s normal business<br />
hours.<br />
Note: a by-pass is required for traffic signal light power supply<br />
services.<br />
Three-Phase:<br />
100 or 125 amp Single handle lever operated<br />
bypass<br />
required.<br />
200 or 320 amp Single handle lever operated bypass<br />
which locks the meter blades<br />
in the socket jaws required.<br />
Refer to the "Supplement" for more details on meter socket<br />
and by-pass requirements (see inside back cover of this<br />
handbook).<br />
810. INSTRUMENT TRANSFORMER METERING<br />
A. CURRENT TRANSFORMERS (CTs)<br />
The following services shall generally be arranged<br />
for metering with CTs only (no VTs):<br />
Single-Phase<br />
Volts Amps Wire<br />
120/240 greater than 400 3<br />
Polyphase<br />
Volts Amps Wire<br />
120/208 greater than 400 4 (4-wire wye)<br />
120/240 greater than 400 4 (4-wire delta)<br />
240 greater than 200 3<br />
60
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