Supply Characteristics and Earthing Arrangements

Number and Type of Live Conductors

System Type

A/C

D/C

A/C Live Conductor Type

1‑phase, 2‑wire

2‑phase, 3‑wire

3‑phase, 3‑wire

3‑phase, 4‑wire

D/C Live Conductor Type

2‑wire

3‑wire

Polarity / Phase Sequence Verified

Nature of Supply Parameters

Normal Voltage (U/Uo)

Nominal Frequency (f)

Prospective Fault Current

External Loop Impedance (Ze)

Number of Sources

(1) by enquiry (2) by measurement

Supply Protective Device

BS (EN)

Type

Rating

Main Switch / Switch-Fuse / Circuit-Breaker / RCD

Location

No. of Poles

BS (EN)

Current Rating

Fuse/Device Rating

Voltage Rating

Rated Residual Operating Current (at 1∆n)

Rated Time Delay

Measured Operating time (at 1∆n)

Particulars of Installation Referred to in the Report

Means of Earthing

Distributors Facility

Type

Location

Electrode Resistance

Installation Earth Electrode

eg rod(s), tape etc

Resistance to Earth (ohms)

Main Protective Conductors

Earthing Conductor Material

Size

Connection/Continuity Verified

Bonding Conductor Material