Lincoln Electric SVM103-A service manual Premises Wiring, Circuit Breakers

A-6

INSTALLATION

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PREMISES WIRING

The POWER-ARC 4000 three-wire, grounded neutral generator allows it to be connected to premises wiring. However, the wiring procedure needed to meet the National Electric Code (NEC) regulations as well as city ordinances can be confusing. Matters get worse depending on whether you want the machine to be “hardwired” to the premises or only connected temporarily.

WARNING

Only a licensed, certified, trained electrician should install the machine to a premises or residential electri- cal system. Be certain that:

•The premises is isolated and no feedbacking into the utility system can occur. Certain state and local laws require the premises to be isolated before the generator is linked to the premises. Check your state and local requirements.

•A double pole, double throw transfer switch in con- junction with the properly rated double throw circuit breaker is connected between the generator power and the utility meter.

The POWER-ARC 4000 (unlike other Lincoln Electric equipment) does not have a combined 120/240 volt twist-lock receptacle and cannot be connected to a premises as described in other Lincoln literature.

Remember that the POWER-ARC 4000 is intended only for backup, intermittent use. The gasoline engine has a rated life of 500 hours. It cannot withstand long- term use without proper maintenance. See the MAIN- TENANCE section of this manual for more informa- tion.

Certain electrical devices cannot be powered by the POWER-ARC 4000. Refer to Table A.2 for these devices.

CIRCUIT BREAKERS

The POWER-ARC 4000 has its own

20 amp circuit breakers for overload protection. When the machine is

operated in high temperature environments, the breakers may tend to trip at lower loads than normal- ly.

CAUTION

Never bypass the circuit breakers. Without overload protection, the power-arc 4000 could overheat and/or cause damage to the equipment being used.

POWER-ARC 4000