求翻译：8.当机组单独使用发电时，应拆除电焊电缆或加以防护；当单独使用电焊时，应关闭空气开关，或拔掉电源插头，以免输出端短路。是什么意思？

When the unit power generation alone, removal of the welding cable or be guarded; when used alone welding, air switch should be turned off, or unplug the power cord to avoid output short circuit.

正在翻译，请等待...

8. works as when unit independent employment electricity generation, should demolish the electric welding electric cable or protects; When independent employment electric welding, should close the air switch, or captures the power source plug, in order to avoid out-port short circuit.

8. when the unit with power generation alone, or removal of welding cable protection when used alone when welding, air switches should be turned off or unplug the power plug to avoid output short circuit.