Xantrex Technology TC2 204060 manual DC Wiring, Wire Length Wire Size AWG and mm2

TC2 204060 Series BattChg Owners Guide.book Page 13 Friday, July 8, 2011 11:44 AM

Preparing For Installation

DC Wiring

Table 2 DC Wiring Examples for 24 V chargersa

The following tables show some typical wire sizes for various cable length

Wire Length

Wire Size (AWG and mm2)

runs, based on 3% voltage drop on DC cables, 75 °C (167 °F) rated wire

(max length one way)

with wiring being inside the engine compartment – assumed ambient of

50 °C (122 °F).

feet

meters

TC1024

TC2024

TC3024

Table 1 DC Wiring Examples for 12 V chargersa

5

1.5

No. 16

No. 10

No. 10

(1.3 mm2 )

(5.3 mm2 )

(5.3 mm2 )

Wire Length

Wire Size (AWG and mm2)

7.5

2.25

No. 16

No. 10

No. 10

(max length one way)

(1.3 mm2 )

(5.3 mm2 )

(5.3 mm2 )

20

6

No. 10

No. 8

No. 6

feet

meters

TC2012

TC4012

TC6012

(5.3 mm2 )

(8.4 mm2 )

(13.3 mm2 )

5

1.5

No. 10

No. 8

No. 6

a.Values based on American Boat & Yacht Council E-11 2008

(5.3 mm2 )

(8.4 mm2 )

(13.3 mm2 )

Table VI-A and Table IX.

7.5

2.25

No. 10

No. 6

No. 4

NOTE: In the event of a conflict between the voltage drop table (Table IX)

(5.3 mm2 )

(13.3 mm2 )

(21.2 mm2 )

and the ampacity table (Table VI-A) use the larger wire size.

20

6

No. 6

No. 2

No. 1

Over-current Protection Disconnect

(13.3 mm2 )

(33.6 mm2 )

(42.4 mm2 )

Electrical codes require the DC circuit from each battery to the charger to

a.Values based on American Boat & Yacht Council E-11 2008

be equipped with a disconnect and an over-current protection device,

Table VI-A and Table IX.

usually within 7 inches (17.8 cm) of each battery1. The devices are usually

NOTE: In the event of a conflict between the voltage drop table (Table IX)

DC-rated circuit breakers, fused disconnects, or a separate fuse and

and the ampacity table (Table VI-A) use the larger wire size.

disconnect for each circuit. These devices must be rated for DC voltage and

1.Per American Boat & Yacht Council E-11.

975-0526-01-02

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