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FIGURE 17
RECOMMENDED BRANCH CIRCUIT DISCONNECT LOCATION
BRANCH
CIRCUIT
DISCONNECT
TABLE 5
AWG Copper
Wire Size
#12
#10
# 8
# 6
# 4
16
TO POWER
TO THERMOSTAT
NOTES:
1. Wire size based on 60°C rated wire insulation and 30°C Ambient Temp. (86°F).
2. For more than 3 conductors in a raceway or cable, see the N.E.C. for derating the
ampacity of each conductor.
When installed, the unit must be electrically grounded in accordance with local
codes or, in the absence of local codes, with the National Electrical Code,
ANSI/NFPA 70, if an external electrical source is utilized.
IMPORTANT: THIS UNIT IS APPROVED FOR USE WITH COPPER CONDUCTORS
ONLY CONNECTED TO UNIT CONTACTOR.
WARRANTY MAY BE JEOPARDIZED IF ALUMINUM WIRE IS CONNECTED TO
UNIT CONTACTOR.
Special instructions apply for power wiring with aluminum conductors: Warranty
is void if connections are not made per instructions.
Attach a length (6 or more) of recommended size copper wire to the unit contactor ter-
minals L1 and L3 for single phase, L1, L2 and L3 for three phase.
Select the equivalent aluminum wire size from the tabulation below:
Splice copper wire pigtails to aluminum wire with U.L. recognized connectors for copper-
aluminum splices. Please exercise the following instructions very carefully to obtain a
positive and lasting connection:
1. Strip insulation from aluminum conductor.
2. Coat the stripped end of the aluminum wire with the recommended inhibitor, and
wire brush the aluminum surface through inhibitor. INHIBITORS: Brundy-Pentex "A";
Alcoa-No. 2EJC; T & B-KPOR Shield.
3. Clean and recoat aluminum conductor with inhibitor.
4. Make the splice using the above listed wire nuts or split bolt connectors.
5. Coat the entire connection with inhibitor and wrap with electrical insulating tape.
AWG Aluminum
Connector Type and Size
Wire Size
(or equivalent)
#10
T & B Wire Nut
# 8
T & B Wire Nut
# 6
Sherman Split Bolt
# 4
Sherman Split Bolt
# 2
Sherman Split Bolt
TABLE 4
BRANCH CIRCUIT COPPER WIRE SIZE
(Based on 1% Voltage Drop)*
200
6
150
8
100
10
50
14
15
BRANCH CIRCUIT AMPACITY
*Taken from National Electric Code
I317A
PT2
PT3
TSP6
TSP4
TSP2
4
4
4
3
3
2
6
6
4
4
4
3
8
8
6
6
6
4
12
10
10
8
8
6
20
25
30
35
40
45 50
SUPPLY WIRE
LENGTH-FEET
2
3
4
6
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