AMETEK/PRESTOLITE POWER ULTRA CHARGE, Owner'S Manual, Page: 11 / 70

193111-068
INSTALLATION
4-2 March 31, 2005
Table 4-1 Recommended AC Input and Branch Fusing
LINE AMPS
DISCONNECT
SWITCH *
COPPER CABLE SIZE AWG * *
POWER GROUND
0-2.5 30A 5 No. 14 No. 14
2.6-4.5 30A 7 No. 14 No. 14
4.6-7.5 30A 10 No. 14 No. 14
7.6-12 30A 15 No. 14 No. 14
12.1-16 30A 20 No. 12 No. 12
16.1-18 30A 25 No. 10 No. 10
18.1-22 30A 30 No. 10 No. 10
22.1-24.5 60A 35 No. 8 No. 10
24.6-32.5 60A 40 No. 8 No. 10
32.6-40 60A 50 No. 8 No. 10
40.1-45 60A 60 No. 6 No. 10
45.1-57.5 100A 80 No. 4 No. 8
57.6-78 100A 100 No. 2 No. 8
78.1-102.5 200A 125 No. 2 No. 6
102.6-135 200A 150 No. 1/0 No. 6
BRANCH FUSE SIZE
(AMPERES)
The above table (Table 4-1) is based on 75°C (167°F) rated conductors and 40°C (104°F) ambient temperatures.
Refer to National Electrical Code (1999) Tables 310-16 corrected to 40°C (104°F).
* For 115, 208, and 230-volt lines, use 250-volt disconnect switch.
For 440-480, 575-volt lines, use 600-volt disconnect switch.
* * Two conductors and ground conductor required for single phase.
Three conductors and ground conductor required for three phase.
Recommended minimum size of grounding conductors (based on National Electrical Code 1999 – Table 250-95).
Line Voltage Changeover Instructions
1. Determine if the charger is connected for available
line voltage. A label located near AC input terminals
is marked with the AC voltage for which the charger
is factory connected.
2. If charger is not connected correctly, check serial
nameplate to determine that charger is equipped
to be connected for available line voltage. If charger
is suitably equipped, make voltage changeover
connections by following instructions on AC input
label inside charger.
3. If charger is reconnected, check input fuse (s) ratings
with ratings specified on label and replace if
necessary.
CAUTION: INCORRECT CONNECTIONS
AND INCORRECT FUSE SIZE can damage
this equipment. Follow voltage changeover
instructions carefully.
Line Connections to Battery Charger
Follow local code requirements if different than
instructions in this manual.
1. Turn charger OFF.
2. Be sure charger is connected correctly for available
line voltage as instructed above.
3. On charger nameplate, note the AC input amperes
corresponding to the line voltage to which charger
is to be connected. Use that ampere value to select
the proper disconnect switch, fuse, and power cable
sizes from Table 4-1. A “WARNING” label inside
charger also lists fuse sizes for each line voltage
(circled fuse rating is required for internal line
voltage connections made at factory).
4. Route AC power input cable in through knockout
provided in side panel of charger cabinet. Securely
fasten cable wires to a power input terminal inside
charger. Refer to Grounding section of this manual
for proper connection of grounding conductor.
(Charger cabinet top or side panel, or both, may
have to be removed to provide access to terminal
block.)