What are the symbols commonly used on electrical paper?

1, hard copper core:

BVV PVC insulated and sheathed copper conductor

BV-PVC insulated copper conductor

BX rubber insulated copper conductor

2, soft copper core:

PVC insulated copper core flexible wire,

RHF-chloroprene rubber sheathed copper core flexible wire.

The wires of oxygen cabin often adopt BV, BX, RV and RVV series, among which:

L: live wire (red conductor)

N: neutral line (blue line)

PE: grounding wire (yellow-green double-color conductor)

Extended data

1. Color: In power cables, yellow, green and red respectively represent phase A, phase B and phase C (three-phase live wire), blue represents zero line, and yellow and green represents ground wire.

2. Distinguish with an electric pen: When testing the live wire with an electric pen, the neon tube will glow, but the zero line will not.

3. Use voltmeter to distinguish: the voltage between different phase lines (i.e. live wires) is 380V, the voltage between phase lines (live wires) and neutral lines (or good grounding bodies) is 220V, and the voltage between neutral lines and good grounding bodies is 0 V. ..