Heat Controller A-13 installation instructions Branch Circuit Ampacity Supply Wire LENGTH-FEET

FIGURE 17

RECOMMENDED BRANCH CIRCUIT DISCONNECT LOCATION

BRANCH

CIRCUIT

DISCONNECT

TO POWER

TO THERMOSTAT

I317A

TABLE 4

BRANCH CIRCUIT COPPER WIRE SIZE (Based on 1% Voltage Drop)*

200	6	4	4	4	3	3	2	2
150	8	6	6	4	4	4	3	3
100	10	8	8	6	6	6	4	4
50	14	12	10	10	8	8	6	6
	15	20	25	30	35	40	45	50

BRANCH CIRCUIT AMPACITY

SUPPLY WIRE

LENGTH-FEET

*Taken from National Electric Code

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.

TABLE 5

AWG Copper	AWG Aluminum	Connector Type and Size
Wire Size	Wire Size	(or equivalent)
#12	#10	T & B Wire Nut	PT2
#10	# 8	T & B Wire Nut	PT3
# 8	# 6	Sherman Split Bolt	TSP6
# 6	# 4	Sherman Split Bolt	TSP4
# 4	# 2	Sherman Split Bolt	TSP2

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