Customer-Supplied Remote Starter Wiring
50 CVHH-SVX001A-EN
Current Transformer and Potential
Transformer Wire Sizing
For customer-supplied starter-to-chiller unit control panel
starter module 1K23; these wires must be separated from
120 Vac or higher wiring.
Table 15. Maximum recommended wire length for
secondary CT leads in dual CT system
W ire AW G
( a)
( a) For AWG/ MCM equivalent s in m m
2
, refer to
Table 12, p. 47. Wires, lugs,
and fuses/ breakers are sized based on National Electric Code NEC
[ NFPA 70] and UL 1995.
Maxim um W ire Length
Secondary CT Leads
Meters Feet
8 415.5 1362.8
10 261.2 856.9
12 164.3 538.9
14 103.3 338.9
16 65.0 213.1
17 51.5 169.1
18 40.9 134.1
20 25.7 84.3
Notes:
1 . Wire length is for copper conductors only.
2 . Wire length is total one-way distance that the CT can be from the
starter module.
Table 16. Maximum recommended total wire length for
PTs in a single PT system
W ire AW G
( a)
( a) For AWG/ MCM equivalent s in m m
2
, r efer t o
Tab le 12, p. 4 7. Wir es, lugs,
and fuses/ breakers are sized based on National Electric Code NEC
[ NFPA 70] and UL 1995.
Maxim um Lead Length
Meters Feet
8 1627 5339
10 1023 3357
12 643 2112
14 404 1328
16 254 835
17 201 662
18 160 525
20 100 330
21 79 262
22 63 207
Notes:
1 . Wire length is for copper conductors only.
2 . The above length is maximum round trip wire length. The maximum
distance the PT can be located from the starter module is half of the
listed value.
Table 17. Max recommended total wire length (to and
from) for PT leads in a dual PT system
W ire
AW G
( a)
(a) For AWG/ MCM equivalents in m m
2
, refer t o
Ta b l e 1 2 , p . 4 7 . Wires, lugs,
and fuses/ breakers are sized based on National Electric Code NEC
[ NFPA 70] and UL 1995.
Max W ire Length
Primary
Max W ire Length
Secondary
Meters Feet Meters Feet
8 933 3061 217 711
10 586 1924 136 447
12 369 1211 85 281
14 232 761 53 177
16 145 478 33 111
17 115 379 26 88
18 91 301 21 70
20 57 189 13 44
21 45 150 10 34
22 36 119 8 27
Notes:
1 . Wire length is for copper conductors only.
2 . The above length is maximum round trip wire length. The maximum
distance the PT can be located from the starter module is half of the
listed value.
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