Earthing, grounding, and neutral arrangement are local electrical design issues, but they affect the generator quotation. An export RFQ should state voltage, phase, wire system, breaker scope, ATS arrangement, and the documents needed by the local engineer. The supplier should not be asked to guess the destination site's grounding method.
What buyers should know first
Generator suppliers can provide alternator wiring, breaker, terminal, and panel drawings. The local engineer or electrical contractor should confirm grounding and neutral treatment according to site rules. The RFQ should separate supplier scope from local installation responsibility.
Electrical interface checks
| Interface item | Confirm before order | Reason |
|---|---|---|
| Voltage system | Voltage, phase, wire arrangement | Matches alternator and panel |
| Neutral | Neutral terminal and treatment by site | Avoids grounding confusion |
| Breaker | Mounted breaker, rating, poles | Matches downstream equipment |
| ATS | Included, separate, or by others | Clarifies switching and neutral needs |
| Documents | Wiring and terminal drawings | Supports local approval |
Details to confirm before quotation
- Voltage, frequency, phase, and wire system requested by the project.
- Whether the generator includes a mounted breaker or only terminals.
- ATS scope, pole count expectation, and whether ATS is supplied by Yangzhou Tesla Power Equipment Co., Ltd. or another party.
- Cable entry direction, terminal access, and grounding lug expectations.
- Local electrical code documents or project specifications that affect the generator package.
- Who is responsible for site earthing electrode, bonding, and final inspection.
Common export mistakes
- Writing only the voltage and omitting phase and wire arrangement.
- Assuming neutral switching rules are the same in every destination market.
- Changing ATS or breaker scope after the generator panel is built.
- Not giving the local engineer supplier wiring drawings before installation.
- Expecting the generator supplier to certify site grounding that is outside the supplied package.
Documents to request
Ask for alternator data, breaker details, controller wiring diagram, terminal drawing, cable entry notes, panel layout, and factory test record. If the destination project has a grounding or neutral specification, include it with the RFQ for review.
Useful internal references
- Soundproof diesel generator package with ATS option
- 480V 60Hz export generator checks
- Cable entry and breaker scope checks
Common questions
Can the generator supplier decide the grounding method?
The supplier can provide equipment details, but the local engineer should confirm site grounding and code requirements.
Why state phase and wire arrangement?
The alternator, breaker, panel, and ATS interface depend on the electrical system, not just the voltage number.
Should neutral switching be discussed for ATS projects?
Yes. ATS scope and local rules can affect pole count and neutral treatment.
What documents help the installer?
Terminal drawings, wiring diagrams, breaker details, panel layout, and factory test record are useful.
Is earthing the same in every export market?
No. Local rules vary, so destination project requirements should be included in the RFQ.
Before requesting a quotation
For export generator projects, define the electrical interface early. Voltage, phase, neutral arrangement, breaker, ATS, cable entry, and local responsibility should be clear before comparing offers.