Distribution box in the installation, there will always be some seemingly small, but not endanger the problem, the following small list of some of our installation of distribution box will appear some common problems and the corresponding control measures and solutions Way for your reference.
First, distribution box installation common problems:
01 outdoor distribution box no measures to prevent rainwater
02 power into the box is not in place
03 concealed assembly box into the line at the part of the wire buried in the wall without the tube
04 The cables entering and leaving the power distribution box are not grounded
05 Cable steel armor into the distribution box (cabinet) and is not grounded
06 pipe nozzle is not handled , the pipe is not plugged after the cable through the tube
07 hanging (embedded) wall distribution box height does not meet the requirements
08 distribution box phase, zero, the ground busbar on the unmarked
09 Distribution box with zero ground mixed (shared bus)
10 Distribution box, cabinet ground wire used in series with each other
11 distribution box without leaving the amount of wiring , irregular
12 Distribution Boxes The distance between the appliances and the sides of the box is too close
13 Distribution box power wiring phase sequence is incorrect
14 Distribution box wiring crowded , and irregular cross
15 knocking out the excess box knockout hole
16 distribution box, cabinet in the incoming line do not repeat the grounding
17 boxes of ground wire and bolt specifications do not match
18 Displacement between the centerline of the buried tube and the box hole
19 cable does not hang signs
20 conductor through the distribution board , the board hole at the mouth without protection
21 multi-strand cord is not tin , wire without nose
22 electrical fasteners do not match , no anti-loosening device
23 wire, wire nose, spark between the bus
24 copper nose fixed in the aluminum row no transitional measures
25 Connect more than two wires to the same terminal
26 A hollowed-out distribution box on a 180 mm thick wall creates a hollowed-out drum on the back
27 Ground wire is insufficient in wire diameter
28 zero, grounding the ground connection in series
29 serves as a ground terminal row PEN fastening end
30 Protects multiple branches with one earth leakage protector
31 Wiring of incoming power cord is incorrect
32 busbar bolt installation direction is wrong
33 busbar section less than 4 × 25 mm2
34 busbar fasteners incomplete, not complete , exposed thread inadequate
35 with the switch power supply side of the bus as a bus stand bracket
36 A few wires are first twisted with each other and then connected with a desired contact by a wire
Work zero line does not cross the zero sequence current transformer
38 boxes, the cabinet does not prevent rodent access to measures
Trace Element Fertilizer,Magnenium Sulfate Mgso4 Food Grade,Edta Chelated Trace Element Fertilizer,Magnenium Sulfate Mgso4
Tianjin Centerstar Chemical Co., LTD. , https://www.tccadmixture.com