18 Years Factory offer XJM7 Measuring Box (Low Voltage Power Measurement Box) for Guatemala Importers
Exterior and dimensions
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XJM7 series of lighting Power metering box is suitable in power centralized measurement management of apartment buildings office buildings. Pulse-type power meter can be installed to according to the design needs to achieve computer management. Besides, proper location is preserved to install remote-measuring remote sensing equipment. There are small circuit breakers installed in the cabinet to protect the line from overload, short circuit. The power meter and circuit breaker rated current are selected by design.
In line with GB7251.1-1997 and 7251.3-1997 standards.
Disclaimer: This video is to show the way I did the job of upgrading my 10/3 feeder wire. I am not showing the way all the experts watching would do it. I am a licensed aircraft avionics (electrician) not a home electrician:I did not cut a long opening in the drywall. This sub-panel was inspected by an electrical underwriter back in 1985. Now I am wiring my new workshop with an existing sub-panel I had installed back in 1985. I am a licensed aircraft technician and was allowed by the town code board to wire my own one family house wiring, including connecting to the incoming power company wiring that terminated on a pole connected to my house, this was back in 1985, I do not think that is allowed anymore.Now I am updating the size to 10/3 coming from the sub-panel to the underground UV cable I had buried back in 1985. The two 30 amp switches I have been using, although renewed, could be eliminated and just use the sub panel circuit breakers when your not using shed power, also I am installing an 8 foot copper rod, pounded into the ground and connected to the shed box neutral bar using unshielded solid # 4 copper wire with the required rod clamp. The main house neutral bar is also connected to a #4 solid copper ground wire unbroken to the pipe below the house’s main water shut off valve and continues out of the house and connected to an 8 foot copper rod with heavy required clamp.This gets pounded below the dirt close to the foundation. Over 616 HD Video
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What is HRC (High Rupturing Capacity) fuse ?
HRC fuse is High Rupturing Capacity fuse.
At the time of fault it disconnect the circuit very fast.
Filling powder is silica sand.
No flashover occurred.
Heat at the time of fault convert melt silica into glass.
Ceramic body with metal end cap.
Fuse element is silver conductor.
Size is vary according to usage.
Under normal load condition the fuse conductor is at temperature below its melting point.
At fault load condition the fuse conductor is at above its melting point due to high current and get breaks down.
High speed response.
No maintenance .
We have to replace it manually after each operation.
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