7-3. Correct Installation

A. Worksite Requirements

 

 

Cutting Zone

3

50 ft

 

 

(15 m)

50 ft

 

 

(15 m)

 

 

5

7

6

1

2

8

4

8

Ground All

 

 

 

 

Metal Objects

 

 

And All Wiring

 

 

In Cutting Zone

 

 

Using #12 AWG

Ground

 

Wire

 

Workpiece

 

 

 

 

If Required

 

 

By Codes

Nonmetal Building

8

11

9

8

Metal Building

1 Plasma Arc Cutting Source

Ground metal machine case, line disconnect device, input supply, and workpiece (if required).

2 Center Point Of Cutting Zone

Midpoint between high-frequency source and cutting torch.

3 Cutting Zone

A circle 50 ft (15 m) from center point in all directions.

4 Torch And Work Cables

Keep cables close together.

10

5 Conduit Joint Bonding And Grounding

Electrically join (bond) all conduit sections using copper straps or braided wire. Ground conduit every 50 ft (15 m).

6 Water Pipes And Fixtures

Ground water pipes every 50 ft (15 m).

7 External Power Or Telephone Lines

Locate high-frequency source at least 50 ft (15 m) away from power and phone lines.

8 Grounding Rod

Consult the National Electrical Code for specifications.

Ref. S-0755

Metal Building Requirements

9 Metal Building Panel Bonding Methods

Bolt or weld building panels together, install copper straps or braided wire across seams, and ground frame.

10 Windows And Doorways

Cover all windows and doorways with grounded copper screen of not more than 1/4 in (6.4 mm) mesh.

11Overhead Door Track Ground the track.

OM-217 Page 31

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Miller Electric Spectrum 1000, Spectrum 1250R Correct Installation, Worksite Requirements, Metal Building Requirements

Spectrum 1000, Spectrum 1250R specifications

Miller Electric has long been a leader in advanced welding technology, and the Spectrum 1250R and Spectrum 1000 are prime examples of their revolutionary products designed for professionals. Both models are plasma cutting systems that offer remarkable performance, durability, and user-friendly features tailored for precision cutting in various applications.

The Spectrum 1250R is known for its robust capabilities, boasting a maximum cutting thickness of up to 1 inch on mild steel. Its powerful 125 amp output ensures rapid cutting while maintaining a clean edge, which is essential for industries requiring precision and efficiency. The integrated Auto-Refire technology minimizes downtime by enabling the torch to continue cutting even through brief interruptions. Users appreciate the system’s portability, thanks to its lightweight design and convenient shoulder strap.

The Spectrum 1000, while slightly less powerful, is no less impressive. It supports a maximum cutting thickness of ¾ of an inch on mild steel, making itideal for medium-scale projects and applications. Its advanced technologies include an Easy Start feature that guarantees quick arc initiation without the need for high-frequency start options. This is particularly beneficial in reducing the risk of damaging sensitive electronics nearby.

Both models incorporate Miller’s Auto-Set technology, which streamlines operations by automatically adjusting the settings to match the material thickness and type. This innovative feature eliminates the guesswork for users, allowing for consistent results and enhancing overall productivity. The systems also utilize a unique drag-cutting capability, enabling users to maintain the torch directly on the workpiece for improved cut quality and control.

Moreover, the durability of the Spectrum series is highlighted by their seal design that protects critical internal components from dust and contaminants, significantly extending the lifespan of the units. Adjustments and maintenance are simplified, thanks to the easy-access design of the consumables.

In terms of safety, both models prioritize user protection, featuring thermal and overload protection to prevent overheating and prolonging the life of the equipment. Whether being utilized in a workshop or an outdoor environment, the Spectrum 1250R and Spectrum 1000 provide reliable, high-quality performance desired by welding professionals. Their combination of cutting-edge technology, ease of use, and robust design makes them invaluable tools in the toolbox of any welder or metalworker.