Specifications

SVI Trucks

Freightliner 4-Door Demo

SVI #917 01/05/15

LINE VOLTAGE ELECTRICAL SYSTEM

GENERAL REQUIREMENTS

Stability

Any fixed line voltage power source producing alternating current (ac) shall produce electric power at 60 Hz, ±3

Hz when producing power at all levels between no load and full rated power. Any fixed line voltage power source

shall produce electric power at the rated voltage ±10 percent when producing power at all levels between no load

and full rated power.

The maximum voltage supplied to portable equipment shall not exceed 275 volts to ground. Higher voltage shall

be permitted only when used to operate fixed wired, permanently mounted equipment on the apparatus.

Conformance with National Electrical Code

All components, equipment, and installation procedures shall conform to NFPA 70, National Electrical Code,

except where superseded by the requirements of this chapter. Where the requirements of this chapter differ from

those in NFPA 70, the requirements in this chapter shall apply.

Where available, line voltage electrical system equipment and materials included on the apparatus shall be listed

and used only in the manner for which they have been listed. All equipment and materials shall be installed in

accordance with the manufacturer’s instructions.

Location Ratings

Any equipment used in a dry location shall be listed for dry locations. Any equipment used in a wet location shall

be listed for wet locations.

Any equipment, except a PTO-driven generator, used in an underbody or under chassis location that is subject to

road spray shall be either listed as Type 4 or mounted in an enclosure that is listed as Type 4.

If a PTO-driven generator is located in an underbody or under chassis location, the installation shall include a

shield to prevent road spray from splashing directly on the generator.

Grounding

Grounding shall be in accordance with 250.34(A) and 250.34(B) of NFPA 70. Ungrounded systems shall not be

used.

Only stranded or braided copper conductors shall be used for grounding and bonding.

The grounded current-carrying conductor (neutral) shall be insulated from the equipment-grounding conductors

and from the equipment enclosures and other grounded parts.

The neutral conductor shall be colored white or gray in accordance with 200.6, “Means of Identifying Grounded

Conductors,” of NFPA 70.

Any bonding screws, straps, or buses in the distribution panel board or in other system components between the

neutral and equipment-grounding conductor shall be removed and discarded.