appliance
building
cable
connect
connection
construction
contact
continuity
copper
copper tank
copper tube
earth
electrical
electrical connection
electrical work
electricity
equipment
flow
ground
ground connection
grounded
grounding
grounding near the house
home
hot
household
industry
installation
installation work
installing
line
mechanical
metal
outlet
pipe
power
residential
safety
security
sensors
steel
system
technical
technology
tool
tools
tube
voltage
warm
wire
定額
Grounding of all household electric devices and equipment, Grounding for protection against discharges of static and atmospheric electricity, installation of a copper tube.newの素材 [FY310166950722]
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