In the diagram below, label the type of circuit represented by each part of the installation, choosing from among the following. You may or may not require all the types listed. 
Power supply wiring
Class 1 wiring
Class 2 wiring
Class 3 wiring
Communications wiring
Definitions:
Cancer Treatment Options
Encompasses a range of methods used to fight cancer, including surgery, chemotherapy, radiation, and targeted therapy.
Chemotherapy
A treatment method that uses chemicals or drugs to kill or halt the growth of cancer cells.
Radiation Therapy
A treatment that uses high doses of radiation to kill cancer cells and shrink tumors by damaging their DNA, often used in the treatment of various types of cancer.
Terminal Illness
A disease or condition that is incurable and expected to lead to the death of the patient within a relatively short period.
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