应在供电线路中安装铁壳闸刀开关一只，供此箱专用，并将外壳接地。
A knife switch with iron shell shall be installed in the power supply line, which is exclusively for this oven, and the outer plate shall be grounded.
应在供电线路中安装铁壳闸刀开关一只，供此箱专用，并将外壳接地。
A knife switch with iron shell shall be installed in the power supply line, which is exclusively for this oven, and the outer plate shall be grounded.
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