Final answer:
Instrument sets indeed require chemical indicators inside and outside to verify sterilization. High-voltage wires are held by insulating connectors but are not wrapped in insulating material, as the high voltage would break it down.
Step-by-step explanation:
The assertion that instrument sets must have chemical indicators both on the outside and inside of the containment device or wrapped instrument set is indeed true. The purpose of these indicators is to signify that the contents have been exposed to the sterilization process.
Inside the pack, the indicator confirms that the sterilization agent has penetrated the packaging and reached the instruments. This is critical for maintaining sterility and ensuring patient safety.
On the outside, indicators help to rapidly identify whether the pack has gone through the sterilization process without needing to open the pack, therefore maintaining its sterility until use.
The high-voltage wires seen on tall metal-frame towers are not wrapped in insulating material. They are held aloft by insulating connectors, which prevents the current from travelling down the towers to the ground.
The high voltage carried by these wires would quickly break down any wrap-around insulating material, so it is more practical and safe to use air as an insulator, with the conductive wires left bare.