Kohler 12RES Installation Manual - Page 19

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1.8 Electrical Connections

WARNING

Hazardous voltage. Backfeed to

the utility system.

Can

cause

severe injury, or death.

If the generator set is used for

standby power, install an automatic

transfer switch to prevent inadvertent

interconnection

normal sources of supply.

Grounding electrical equipment. Hazardous voltage will

cause severe injury or death. Electrocution is possible

whenever electricity is present. Ensure you comply with all

applicable codes and standards.

generator set, transfer switch, and related equipment and

electrical circuits. Turn off the main circuit breakers of all

power sources before servicing the equipment. Never contact

electrical leads or appliances when standing in water or on wet

ground because these conditions increase the risk of

electrocution.

Electrical backfeed to the utility. Hazardous backfeed

voltage can cause severe injury or death. Install a transfer

switch in standby power installations to prevent the connection

of standby and other sources of power. Electrical backfeed

into a utility electrical system can cause severe injury or death

to utility personnel working on power lines.

Row Temp. Rating Copper (Cu) Only

60 C (140 F)

Use No. * AWG, 60 C wire or

use No. * AWG, 75 C wire

75 C (167 F)

60 C (140 F)

Use No. * AWG, 60 C wire

75 C (167 F)

Use No. * AWG, 75 C wire

90 C (194 F)

Use No. * AWG, 90 C wire

* The wire size for 60 C (140 F) wire is not required to be included in the marking. If included, the wire size is based on ampacities for the

wire given in Table 310-16 of the National Electrical Code , in ANSI/NFPA 70, and on 115% of the maximum current that the circuit carries

under rated conditions. The National Electrical Code

Use the larger of the following conductors: the same size conductor as that used for the temperature test or one selected using the

guidelines in the preceding footnote.

Figure 1-17 Terminal Markings for Various Temperature Ratings and Conductors

TP-6967 2/21

property

damage,

standby

and

Electrically ground the

is a registered trademark of the National Fire Protection Association, Inc.

Canadian installations only. For standby service connect

the output of the generator set to a suitably rated transfer

switch in accordance with Canadian Electrical Code, Part 1.

Have a Kohler authorized distributor/dealer or a

licensed electrician make the following electrical

connections. The electrical installation must comply

with the National Electrical Code (NEC) and all

applicable local codes. Canadian installations must

comply with the Canadian Electrical Code (CEC) and

applicable local codes.

Ground the generator set according to applicable

codes. See Section 1.8.3.

For

customer-supplied

temperature rating in Figure 1-17 based upon the

following criteria:

Select row 1, 2, 3, or 4 if the circuit rating is

110 amperes or less or requires #1 AWG (42.4 mm

or smaller conductors.

Select row 3 or 4 if the circuit rating is greater than

110 amperes or requires #1 AWG (42.4 mm

larger conductors.

Cu/Aluminum (Al) Combinations

Use 60 C wire, either No. * AWG Cu, or No. *

AWG Al or use 75 C wire, either No. * AWG

Cu or No. * AWG Al

Use 60 C wire, either No. * AWG Cu or No. *

AWG Al

Use 75 C wire, either No. * AWG Cu or No. *

AWG Al

Use 90 C wire, either No. * AWG Cu or No. *

AWG Al

NOTICE

wiring,

select

the

Al Only

Use 60 C wire, No. * AWG or

use 75 C wire, No. * AWG

Use 60 C wire, No. * AWG

Use 75 C wire, No.* AWG

Use 90 C wire, No.* AWG

Section 1 Installation

wire

)

) or