14 Years manufacturer XJM7-J Measuring box (Infrastructure Energy Measurement Box) to Croatia Importers
Exterior and dimensions
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XJM7-J metering box (infrastructure power metering box) is suitable in power supply system with AC 50HZ, rated voltage 380 / 220V , as the power measurement in construction site.
Meet GB7251.1-1997 and GB7251.3-1997 standards.
Replacing a 50 amp breaker box with a 100 amp breaker box and running new service wire to the meter. Moving the breaker box from closet to room wall for easier and safer access. Do not attempt to do anything you see in the video. This is for entertainment (edutainment) purposes only.
Test set up with an overhead line to a 20 Amp MCB protected piece of 1.5 mm² TPS cable.
Later the MCB was bypassed to see what happened.
The 1.5mm² TPS overheated rapidly and burnt out.
A bolted short was made on the OH line.
The overhead line 2.5mm² overheated rapidly and the pvc insulation melted as well as the line sagged.
At the end of the video an other piece of 1.5mm² TPS cable was used again.
I created this video with the YouTube Video Editor (http://www.youtube.com/editor)