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Topic: forklift chargers.

User: tbuck, Location: Nebraska

Asked on: Thursday, December 26, 2024 at 5:11 pm EST
Answered on: Thursday, March 6, 2025 at 6:41 am EST

Question: came across a foreign fork lift charger with a type "ZOSH" cord coming from the charger. So far I am having difficulty finding any information about this type of cord assembly. Is anyone out there knowledgeable about this type of cord?Also the cord was using Red as L1 Yellow as L2 and Green as L3 with a grounded conductor as Yellow with Green stripe. (Because that is what was inside the outer jacket of insulation in the cord assembly) NEC states that a green conductor is only to be used as a equipment ground. Is anyone aware of another governing body that allows Green to be used as an Ungrounded conductor?Please teach me and leave unsubstantiated knowledge off of this forum.Thanksted

Okay, let's break down the situation with the "ZOSH" cord and the color-coding issues you've encountered.1. What is "ZOSH" Cable? Most Likely a Trade Name

"ZOSH" is highly likely to be a specific trade name or manufacturer's designation for a cable, rather than a widely recognized international standard. Think of it like "SOOW" or "SJOOW" cable in North America; they are industry-recognized, but not universally defined standards.


German Origin Possibly

From my knowledge of German cables, the "ZOSH" cable may be a German cable that is a oil resistance rated cable, but it is not a common cable so very little information is published about the cable. As such the use of the cable in the USA is most likely in violation of UL standard 1569.

How to find more details



Look for Manufacturer Markings

Carefully examine the cable itself. There might be markings indicating the manufacturer (a logo, name, or abbreviation) and possibly a part number or specification number. Searching for that manufacturer's documentation is your best bet.


Trace the Equipment Origin

Where was the forklift charger manufactured? Knowing the country of origin will give you clues about the electrical standards that might have been followed during its construction.

Check with Cable Suppliers

Contact major cable suppliers (like Lapp Group, Belden, or similar global suppliers) and inquire if they recognize the "ZOSH" designation and can provide specifications.

2. The Color-Coding Issue: Red, Yellow, Green as Ungrounded Conductors
Violation of NEC (in the USA)

You are absolutely correct. The National Electrical Code (NEC) in the United States strictly reserves green (with or without a yellow stripe) for equipment grounding conductors. Using it as an ungrounded (phase) conductor is a direct violation of the NEC. This is for safety, to prevent accidental energizing of grounded surfaces and potential shock hazards.

International Standards Differences

Many other countries use color codes for power conductors that differ from the NEC.


European (IEC) Standards

The IEC (International Electrotechnical Commission) 60446 standard (used in Europe and many other regions) has undergone changes. Older installations might use different color codes, but the current standard calls for:

Brown

L1 (Phase 1)


Black

L2 (Phase 2)

Gray

L3 (Phase 3)


Blue

Neutral (if present)

Green-Yellow (striped)

Protective Earth (Ground)


Older Standards

In older installations (even within Europe), you might encounter different color codes. For instance, Red might have been used as a phase conductor in the past.

Importance of Documentation

The critical thing is to have documentation that clearly identifies the purpose of each conductor
regardless of color. This is especially true when dealing with equipment from different countries.

3. Is there another Governing Body allowing Green as Ungrounded?
No reputable electrical standard allows green solely as an ungrounded conductor. The purpose of a universally recognizable ground color is to eliminate ambiguity and enhance safety. Possible Misinterpretations



Control Wiring

Sometimes, in low-voltage control circuits (not power circuits), you might see a green wire used for a signal. This is not the same as a power conductor, and these circuits would be clearly isolated and labeled. However, this wouldn't be the case for a forklift charger.

Older Equipment/Non-Compliant Wiring

It's possible the equipment was wired incorrectly from the factory or has been modified improperly. This is a
safety hazard and should be corrected.

Recommendations and Actions


Treat with Extreme Caution

Immediately de-energize the forklift charger. Do not use it until the wiring issue is resolved.2.

Consult a Qualified Electrician

You need a licensed electrician with experience in industrial equipment and preferably familiarity with international wiring standards. They can:
Thoroughly inspect the wiring of the charger and the forklift. Identify the manufacturer and specifications of the "ZOSH" cable. Determine if the equipment is safe to use in your location and electrical system. Correct the color-coding to comply with the NEC (or other applicable local codes) using proper wire markers and labels. This might involve replacing the cable entirely if it's not possible to safely identify and re-mark the conductors.3.

Documentation is Key

Obtain complete documentation for the forklift charger, including wiring diagrams, operating manuals, and any certifications it has.4.

Consider Replacing the Cable

If the "ZOSH" cable is difficult to identify or doesn't meet safety standards, replacing it with a UL-listed cable that conforms to the NEC might be the best and safest option.

Important Safety Considerations



Never assume the purpose of a wire based on its color alone.
Always verify the wiring with a multimeter and appropriate testing procedures. Work on electrical equipment only if you are qualified and trained to do so.* Prioritize safety above all else.

In summary, the "ZOSH" cable is likely a specific manufacturer's designation. The color-coding is a serious safety concern. Consult a qualified electrician to inspect, document, and correct the wiring to ensure compliance with local electrical codes and safe operation of the equipment. Flag for review

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